Math, asked by Eshaan6836, 10 months ago

Sintheeta1+sintheeta2+sintheeta3=3 find costheeta1

Answers

Answered by abhi6523
2

Answer:

 \sin \alpha (1)  +  \sin \alpha (2)   +  \sin \alpha (3)  = 3 \\  =  \sin \\  \alpha (1 + 2 + 3) = 3 \\  =  \sin \alpha 6 = 3 \\  =  \sin \alpha  =  \frac{3}{6}   \\  =  \sin \alpha  =  \frac{1}{2}  \\  =  \sin \alpha =  \sin(30 \\ )   \\  =  \alpha  = 30 \\  =  \cos( \alpha )  \\  =  \cos(30)  \\  =  \frac{ \sqrt{3} }{2}

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