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February 11, 2016
Posted by **anon** on Wednesday, January 12, 2011 at 5:22pm.

Finding a and b

- trigonometry -
**helper**, Wednesday, January 12, 2011 at 5:55pmsin A = 3/5 = a/c

if side a = 3 and side c = 5

you should recognize this as a

special rt triangle of 3-4-5

so b = 4

If not

a^2 + b^2 = c^2

3^2 + b^2 = 5^2

b^2 = 16

b = 4

so, a = 3, b = 4