Question

express sin 75 +cos 65 in terms of trignometric ratios of angles between 0 and 45

Answer 1

we know that....

sin a = cos (90°-a)

and, cos a = sin( 90°-a)

From this

sin 75 = cos (90-75)

cos 65 = sin (90-65)

ans:- sin 25° + cos 15°

Answer 2

Answer:

HEY MATE

Step-by-step explanation:

sin a = cos (90°-a)

and, cos a = sin( 90°-a)

From this

sin 75 = cos (90-75)

cos 65 = sin (90-65)

ans:- sin 25° + cos 15°

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