Math, asked by Aniketpehowa99, 6 months ago

2sinxsin(x+π/3)sin(x+2π/3)​

Answers

Answered by Anonymous
15

{ \huge{ \pink{ \underline{ \underline{ \red{ \mathbb{ \bigstar{ \purple{answer}}}}}}}}}

 =  > 2sin x.2sin \binom{x + \pi}{3}  \binom{x + 2\pi}{3}  \\  =  > 2sin x  \binom{ - cos{2x + x + \pi}}{3 \:  \:  \:  \:  \:  \:  \:  \: \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  3}  + cos \: ( \frac{2\pi}{3}  + x -  \frac{\pi}{3}  - x) \\  =  > 2sin x \binom{ - cos(2 x  + \pi) + cos\pi}{ \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: 3}  \\  =  > 2sin x ( \frac{1}{2}  + cos2 x) \\  =  > sinx + 2sinx \: cos2x \\  =  > sin \: x \:  + sin \: 3x \:  - sin \: x \:   =  sin \: 3x

Similar questions