In a right angled triangle ABC Sin A = 5/13

calculate without finding the angel A the following

a) Cos A

b) Tan A

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- Jan 8th 2007, 10:16 AM #1

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- Jan 8th 2007, 10:23 AM #2

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That means the opposite side is 5 and hypotenuse is 13 because sine is opposite over hypotenuse. That means by Pythagorean theorem the adjacent side is 12. Thus, cos A =12/13 because it is adjacent over opposite. And tangent is 5/12 because tangent is opposite over adjacent.

- Jan 8th 2007, 10:24 AM #3

- Jan 8th 2007, 10:27 AM #4