# trigonometry

posted by
**james** on
.

in triangle abc, angle c is a right angle, AC=8,Bc=15 and AB=17

a.find Sine a

b.Find cosine A

c.Find Sine B

d. Find COsine B

E. the measure of angel A

f. the measure of angela b

Can u tell me the answers and how to do it.

Because im in 8th grade