Question

Sin(45+that)-cos(45-thata)

Answer 1

the answer is 0 as they would be cancelled on application of identity sin{90-thetha} =cos thetha

Answer 2

Hi ,

Sin 45° = cos 45° = 1/√2

Sin ( 45 + A ) - cos ( 45 - A )

= Sin 45cosA+ cos45sinA - ( cos45cosA + sin45sinA )

=( 1/√2) cosA + ( 1/√2 ) sinA - (1/√2)cosA - ( 1/√2 )sinA

= 0

I hope this helps you.

:)