7.)For nos. 7-11, refer to the following given and to the figure on the right.
If a =15, b = 8, find c.
a. 17
b. 18
c. 19
d. 20

8.)What is the measure of angle A?
a 28°
b. 32°
C. 58°
d. 62°
9. The measure of angle B is____
a. 28°
b. 32°
c. 58°
d. 62°

10. Which of the following trigonometric ratios/ functions is applied to find the measure of the angles?
a. sine
b. cosine
c. tangent
d. cosecant

11. Cos A=____
a.15/17
b.17/15
c.17/8
d.8/17

I need the right answer with solution...thanks!​