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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)

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)
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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)

asked
User Jmcgriz
by
9.0k points

1 Answer

4 votes

Answer:

sin(-60)

Explanation:

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

answered
User Slee
by
8.5k points
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