please answer it faster qu.no3
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Cos A = Sin B
Sin ( 90° - A ) = Sin B
90° - A = B
A + B = 90°
So ....
Sin ( A + B ) = Sin 90° = 1
Hope it helps
Cos A = Sin B
Sin ( 90° - A ) = Sin B
90° - A = B
A + B = 90°
So ....
Sin ( A + B ) = Sin 90° = 1
Hope it helps
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