Question

PLEASE help! Quickly please. I'll give as many points as I can!

In this triangle which of the following is true?

A. The measure of x is 55 degrees and a = 11.40

B. The measure of x is 22 degrees and a = 11.47

C. The measure of x is 55 degrees and a = 11.47

D. The measure of x is 55 degrees and a = 16.38

Answer 1

x=55

a=11.47

Explanation:

To find x we add all the angles in the triangle. The three angles in a triangle add to 180 degrees

35+x+90 = 180

Combine like terms

125+x=180

Subtract 125 from each side

125-125+x=180-125

x= 55

To find a

sin 35 = opposite side/ hypotenuse

sin 35 =a/20

Multiply each side by 20

20sin35 =a

11.47152873 =a