You have to show the picture
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.
It would be 1.9
1.93 the three keeps nine at nine, it it were a five or above it would round up and the number would become 2.
%increase = (increase / original number ) x100
increase = 3,24 - 2?85 = 0,39
the rate is 39%
If the cosine is 1/2, and the angle is acute, then the angle is 60 degrees. Using the rules for a 30-60-90 right triangle, hyp=2 times the short leg. So 7/2= 3.5.