Math, asked by srijana4, 1 year ago

2sin(A+45)+sin(A-45)

Answers

Answered by HappiestWriter012
3
2 sin( A+45) + sin( A-45)

=2 (sinAcos 45+sin45cos A) + (sinA cos45- cosA sin45)
= 2 sinAcos 45+2sin45cos A+ sinA cos45- cosA sin45
= 3sinAcos45 + cosA sin45
= 3/√2sinA+1/√2 cosA

=(3sinA+cosA)/√2
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