Math, asked by krishnach645, 3 months ago

i) sin(30°+A) + sin(30°-A) =​

Answers

Answered by Anonymous
1

Answer:

sin (A + B ) formula use....

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Answered by sainiinswag
1

Answer:

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The answer is Cos(A)

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sin(30°+A) + sin(30°-A) \\  \\  =  >  \sin(30 ) \cos(a)  +  \cos(30)  \sin(a)  +  \sin(30)  \cos(a)  -  \cos(30)  \sin(a)  \\  \\ 2sin(30 ) \cos(a) \\  \\ 2 \times  \frac{1}{2} cos(a) = cos(a) \:  \:  \:  \:  \:  \:  \:  \: answer

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