Q. 145.0( 5 Votes )

If A and B are complementary angles, then
A. sin A = sin B

B. cos A = cos B

C. tan A = tan B

D. sec A = cosec B

Answer :

Given,


A + B = 90°


B = 90° - A


sin B = sin (90° - A)


sin B = cos A


Taking the reciprocal,


cosec B = sec A


Or


sec A = cosec B

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