Which expression is equivalent to sin(20°)cos(80°) – cos(20°)sin(80°)? A) sin(-60) B) cos(-60) C) cos(60) D) sin(60)

asked Sep 8, 2022 69.3k views

4 votes

Which expression is equivalent to sin(20°)cos(80°) – cos(20°)sin(80°)?

A) sin(-60)
B) cos(-60)
C) cos(60)
D) sin(60)

9.0k points

Please log in or register to add a comment.

4 votes

Answer:

sin(-60)

Explanation:

its in form of sin(A-B) which formula is SinA.CosB-CosAsinB

Slee answered Sep 14, 2022