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November 27, 2015
Posted by **Shane** on Wednesday, February 20, 2013 at 2:25am.

- Maths -
**hannah**, Wednesday, February 20, 2013 at 8:05amUse a2 + b2 = c2 of the right triangle to find the length of the missing side. c=hypotenuse which in this case is 5. 3^2 + b^2 = 5^2

9 + b^2=25

b^2=16

b=4

sin=opposite over hypotenuse which is 4/5

tan=opposite over adjacent which is 4/3

sec=the reciprocal of cosine which is 5/3 (just change the top and bottom numbers of cosine to get secant)