# Cos 2x + 3sinx-2 = 0

(2). (b) Solve the equation 52x – 12(5x) + 35 = 0. (4). June 2008. Page 3. Gold 3: 11/12. 3. 5. (a) Given that 5 sin θ = 2 cos θ, find the value of tan θ . (1). (b) Solve, for 0 ≤ x<360°,. 5 sin 2x = 2 cos 2x , giving your 3 sin (x

CÔNG TY TNHH ĐẦU TƯ VÀ DỊCH VỤ GIÁO DỤC VIETJACK Giấy chứng nhận ĐKKD số: 0108307822 do Sở KH & ĐT TP Hà Nội cấp lần đầu ngày 04/06/2018 x=pi/6+2pin x=5pi/6+2pin 2cos^2x=3sinx Rewrite cos^2x as 1-sin^2x because of the identity sin^2x+cos^2x=1: 2(1-sin^2x)=3sinx Distribute the left side and let one side be zero: 2-2sin^2x-3sinx=0 -2sin^2x-3sinx+2=0 Factor: -2sin^2x-4sinx+sinx+2=0 -2sinx(sinx+2)+(sinx+2)=0 (-2sinx+1)(sinx+2)=0 Use zero product rule: sinx+2cancel=0 sinxcancel=-2 -2sinx+1=0 -2sinx=-1 sinx=1/2 x=pi/6+2pin x=5pi/6+2pin Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor. Compute answers using Wolfram's breakthrough technology & knowledgebase, relied on by millions of students & professionals. For math, science, nutrition, history Chú ý. Nếu các bạn đăng kí thành viên mà không nhận được email kích hoạt thì hãy kiểm tra thùng thư rác (spam). Nếu không biết cách truy cập vào thùng thư rác thì các bạn chịu khó Google hoặc đăng câu hỏi vào mục Hướng dẫn - Trợ giúp để thành viên khác có thể hỗ trợ.

1 cos = 2 sec 2 3 tan . sec =2 sec 2 3 tan sec = + $2\cos(x)-3\sin(x)=0$ Divide both sides by $\cos(x)$ $\displaystyle \frac {2\cos(x)-3\sin(x)}{\cos(x)}=\frac {0}{\cos(x)}$ Refine Nov 15, 2018 · Find : ∫((3 sinx - 2) cos x/(13 - cos2x - 7 sin x)) dx. Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Jul 01, 2012 · A good starting point would be to expand the double angle formula: cos(2x) = 1 - 2(sin(x))^2 From here, the problem becomes almost like the high school quadratic equation types you see everywhere. 2(sin(x))^2 - 3sin(x) + 1 = 0 Aug 04, 2015 · Solve the equation on the interval [0,2pi). 2sin^2x-3sinx+1=0 (2sinx+1)(sinx+1) I don't think I did the factoring correctly.

## Feb 13, 2020 · Transcript. Example 24 Solve 2 cos2 x + 3 sin x = 0 2 cos2x + 3 sin x = 0 2 (1 − sin2 x) + 3 sin x = 0 2 – 2 sin2x + 3 sin x = 0 –2sin2x + 3sin x + 2 = 0 Let sin x = a So, our equation becomes sin2 x + cos2 x = 1 cos2 x = 1 – sin2 x –2a2 + 3a + 2 = 0 0 = 2a2 – 3a – 2 2a2 – 3a – 2 = 0 2a2 – 4a + a – 2 = 0 2a (a – 2) + 1 (a – 2) = 0 (2a + 1) (a – 2) = 0 Hence 2a + 1 Our math solver supports basic math, pre-algebra, algebra, trigonometry, calculus and more. 2009/6/23 Compute answers using Wolfram's breakthrough technology & knowledgebase, relied on by millions of students & professionals. ### Simple and best practice solution for Cos^2x+3sinx-3=0 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so dont hesitate to …

Solved: Solve: 2cos^2(x) + 3cos(x) = 0. By signing up, you'll get thousands of step-by-step solutions to your homework questions. You can also ask And then, the first of these formulae becomes: Cos(t + t) = Cos t cos t – Sin t sin t. so that Cos 2t = Cos 2 t – Sin 2 t. solve cos^2x-3sinx=3 where 0 x / 2 pi cos^2(x)-3sinx=3 1- sin^2(x)-3sinx-3=0 - sin^2(x)-3sinx-2=0 sin^2(x)+3sinx+2=0 (sinx+2)(sinx+1)=0 Dec 06, 2019 · Transcript. Ex 7.1, 20 2 3 sin cos 2 2 3 sin cos 2 = 2 cos 2 3 sin cos 2 = 2 sec 2 3 sin cos . 1 cos = 2 sec 2 3 tan . sec =2 sec 2 3 tan sec = + $2\cos(x)-3\sin(x)=0$ Divide both sides by $\cos(x)$ $\displaystyle \frac {2\cos(x)-3\sin(x)}{\cos(x)}=\frac {0}{\cos(x)}$ Refine Nov 15, 2018 · Find : ∫((3 sinx - 2) cos x/(13 - cos2x - 7 sin x)) dx. Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Jul 01, 2012 · A good starting point would be to expand the double angle formula: cos(2x) = 1 - 2(sin(x))^2 From here, the problem becomes almost like the high school quadratic equation types you see everywhere. Solve your math problems using our free math solver with step-by-step solutions. Our math solver supports basic math, pre-algebra, algebra, trigonometry, calculus and more. Solve your math problems using our free math solver with step-by-step solutions. Our math solver supports basic math, pre-algebra, algebra, trigonometry, calculus and more. Free trigonometric equation calculator - solve trigonometric equations step-by-step Giải phương trình sau: cos 2x - 3sin x - 2 = 0 . CÔNG TY TNHH ĐẦU TƯ VÀ DỊCH VỤ GIÁO DỤC VIETJACK Giấy chứng nhận ĐKKD số: 0108307822 do Sở KH & ĐT TP Hà Nội cấp lần đầu ngày 04/06/2018 cos2x = cos^2x - sin^x = 1 - 2 sin^2 x (using cos^2 x + sin^2 x = 1) Hence cos2x - 3 sinx = 1 - 2 sin^2 x -3 sin x = 2.

0. 1. 2. √22 = 1. √2. √32. 1 cos(x).

√32. 1 cos(x). 1. √32.

Cheers, Stan H. Thanks for your help!

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### 2sin^2x -3sinx -2=0. 2sin^2x -4sinx+sinx-2=0. 2sin x(sin x-2)+1(sinx-2)=0 (sin x -2)(2sin x+1)=0. sin x - 2=0 or 2 sin x+1=0. sin x =2 or sin x = -1/2. Hope this may

LEARNING APP ANSWR CODR XPLOR SCHOOL OS STAR answr Join / Login maths Find the general solution of 2 c o s 2 x + 3 s i n x = 0. Answer 2 cos 2 x + Answer: Step-by-step explanation: 2cos^2x+3sinx=0 2(1-sin^2x)+3sinx=0 2-2sin^2x +3sinx=0 2sin^2x -3sinx -2=0 2sin^2x -4sinx+sinx-2=0 2sin x(sin x-2)+1(sinx-2)=0 A. 0.279 m3 B. 216 ft.3 C. 36 000 mm 3 D. 0.00143603 m 3F. 279 m3 G. 2160 ft.3 H. 113 040 mL SOLUTION: solve cos^2x-3sinx=3 where 0 < x < / 2 pi Algebra -> Trigonometry-basics-> SOLUTION: solve cos^2x-3sinx=3 where 0 < x < / 2 pi Log On Algebra: Trigonometry Section Solvers Solvers Lessons Lessons Answers archive Answers Click here : 15021 views around the world 2012/4/16 2019/12/6 Similar Questions trig solve the equation 2sin^2X - 3sinX= -1 math Solve 3sin2x - 1 = 0 Interval: [0, 2 pi] Solve 6cos^2x + 5cosx - 6 = 0 Calculus (Normal Line, please check my work) The slope of the line normal to the graph of 4 sin x + 9 cos Разделим равенство на cos²x ≠ 0; 2sin²x + 3sinxcosx - 2cos²x = 0; 2sin²x/cos²x + 3sinxcosx/cos²x - 2cos²x/cos²x = 0; 2tg²x + 3tgx - 2 = 0; Выполним замену tgx = t: 2t² + 3t - 2 = 0; Определим дискриминант квадратного уравнения: Solve your math problems using our free math solver with step-by-step solutions. Our math solver supports basic math, pre-algebra, algebra, trigonometry, calculus and more.

## Simple and best practice solution for cos*2x+3sinx+1=0 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so dont hesitate to …

Replace 3cos^2 with 3–3sin^2. Then solve the quadratic eqation in sin(x). If ypu are lucky the answer will be a whole number of degrees. Why not follow my idea and then post an answer if the result Transcript. Example 24 Solve 2 cos2 x + 3 sin x = 0 2 cos2x + 3 sin x = 0 2 (1 − sin2 x) + 3 sin x = 0 2 – 2 sin2x + 3 sin x = 0 –2sin2x + 3sin x + 2 = 0 Let sin x = a So, our equation becomes sin2 x + cos2 x = 1 cos2 x = 1 – sin2 x –2a2 + 3a + 2 = 0 0 = 2a2 – 3a – 2 2a2 – 3a – 2 = 0 2a2 – 4a + a – 2 = 0 2a (a – 2) + 1 (a – 2) = 0 (2a + 1) (a – 2) = 0 Hence 2a + 1 Solution for cosx+3sinx=2 equation: Simplifying cosx + 3sinx = 2 Solving cosx + 3insx = 2 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. A good starting point would be to expand the double angle formula: cos(2x) = 1 - 2(sin(x))^2 From here, the problem becomes almost like the high school quadratic equation types you see everywhere.

(2). (b) Solve the equation 52x – 12(5x) + 35 = 0. (4).