It’s prime because none of the other answers work.
Answer:
true
Step-by-step explanation:
1/2 (sin(x+y)+sin(x-y))
= 1/2 (sin x cos Y + cos x sin y + sin x cos y - cos x sin y)
= 1/2 * 2 sin x cos y
= sin x cos y
The expression is true.
Answer:
x= 18
Step-by-step explanation:
Answer:
58.6 degrees
Step-by-step explanation:
