Question

How do you write the expression as the sine, cosine, or tangent of the angle given `sin60^circcos45^circ-cos60^circsin45^circ`?

Answer 1

sin (105)

Explanation:

Use trig identity:
sin (a - b) = sin a.cos b - sin b.cos a
sin (105) = sin (60 - 45) = sin 60.cos 45 - sin 45.cos 60