trigonometry
posted by james .
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
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