sin theta cos theta (90°- theta) + cos theta sin theta (90°- theta) =?
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Answered by
1
Answer:
sinθcos(90−θ)+cosθsin(90−θ)= A. 0.
Answered by
0
Answer:
sinteta×cos(90-teta)+costeta×sin(90-teta)
=sinteta×sinteta+costeta×costeta
=sinsquare teta+cossquare teta
=1
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