Answer:
C
Step-by-step explanation:
Note that <em>x</em> is opposite to the given angle and we are also given the hypotenuse.
Since we have an angle and the side opposite to it and the hypotenuse, we can use the sine ratio. Recall that:

The opposite side is <em>x</em>, the hypotenuse is 15, and the angle is 53. Substitute:

Solve for <em>x: </em>
<em />
<em />
Use a calculator (make sure you're in Degrees Mode!). Hence:

Our answer is C.
Answer:
Step-by-step explanation:
Since the whole right side of that triangle is equal to 28 and the lower portion is 21, then we know the upper portion is 7. Set up a proportion using those sides and the fact that the 2 triangles are similar:
and cross multiply to get
21x = 126 and
x = 6
Answer:
42
Step-by-step explanation:
because it is the only one do t know so yeah lol