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Trigonometric Equations Part-3
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In this lesson examples on trigonometric equations have been taken to explain the concept more clearly

## Vineet Loomba is teaching live on Unacademy Plus

Vineet Loomba
💥IITian | Top Educator 💥All Maths Chapters Complete & FREE 💥10+ Years Experience 💥Youtube: Maths Wallah 💥DPPs @ vineetloomba.com

U
sir sin [ x+pi/3] se kar sakte hain?
sir first illustration mein sin ke terms mein bana sakte hai kya expression?
1^st example
sir first illustration mein cos(x-π/6)=cos (π/4) kaise aaya???
S
3 months ago
bro 1/ √ 2 is written as cos(π/4)
yes I got it
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2. REVISION COURSE FOR JEE MAIN AND ADVANCED (IIT-IEE ABOUT ME B.Tech. From IIT Roorkee IIT-JEE Mentor Since 2010. Doubts/Feedback in Comment Section * Comment other topics you want to revise. Follow me @ https://unacademy.com/user/vineetloomba to get updates. Share among your peers as SHARING is CARING !!

3. TRIGONOMETRY IIT-JEE TRIGONOMETRIC EQUATIONS IIT-JEE MATHS MADE EASY PREPARED BY: ER. VINEET LOOMBA IITiAN | IIT-JEE MENTOR FoR SURE SHoT SUcCESS IN JEE MAIN AND ADVANCED (IIT-JEE)

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5. REVISION COURSE FOR JEE MAIN AND ADVANCED (IIT-IEE Illustration Solve: sinx+V3 cosx=V2 Given, V3 cosx + sinx = , dividing both sides by Va2-b2 cos 2 2 4 4 12 where nEl 12 MATHEMATICS FOR IIT-JEE ER. VINEET LOOMBA (IIT RooRKee)

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8. REVISION COURSE FOR JEE MAIN AND ADVANCED (IIT-IEE Illustration If sin 5x + sin 3x + sin x = 0 and 0 x /2, then x is equal to Sol: By using sum to product formula ie. sin + sin sin 5x + sinx =-sin 3x 2 sin 3x cos2x + sin3x = 0 sin3x(2cos2x + 1)-0 COS sin 3x = 0, cos 2x =-1 / 2 x = nn, x = n ( / 3) MATHEMATICS FOR IIT-JEE ER. VINEET LOOMBA (IIT RooRKEE)

9. REVISION COURSE FOR JEE MAIN AND ADVANCED (IIT-IEE Illustration Solve cos 3x+sin2x-sin 4x 0 + We can solve this illustration. 2 cos3x + 2cos3x.sin(-x) = o cos3x(1-2sinx) 0 cos 3x sin 2x- sin 4x0 cos 3x-2 cos 3x, sinx 0 COs3x = 0 or 1 _ 2sin x-0-3x = (2n + 1) ,n e l or sin x = 1 .. Solution of given equation is (2n+1) 'n E l or n +(-1)" nel MATHEMATICS FOR IIT-JEE ER. VINEET LOOMBA (IIT RooRKee)

10. REVISION COURSE FOR JEE MAIN AND ADVANCED (IIT-IEE ABOUT ME B.Tech. From IIT Roorkee IIT-JEE Mentor Since 2010. Doubts/Feedback in Comment Section * Comment other topics you want to revise. Follow me @ https://unacademy.com/user/vineetloomba to get updates. Share among your peers as SHARING is CARING !!