Question

find the value cos 48 degree-sin 42 degree​

Answer 1

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GIVEN :-

Cos 48° - sin 42°

TO FIND :-

Find the Value of Cos 48° - sin 42°.

SOLUTION :-

We Have to Find Cos 48° - sin 42°

Since,

cos( 90° - θ ) = sin θ

So,

Cos 48° - sin 42° = cos( 90° - 42° ) - sin

= sin 42° - sin 42°

= 0

So, The Value of Cos 48° - sin 42° is 0