How do you write the expression as the sine, cosine, or tangent of the angle given #sin60^circcos45^circ-cos60^circsin45^circ#?
1 Answer
Feb 17, 2017
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