Question

What is cos P?  Right triangle PQR with a short leg measuring 5, a long leg measuring 12, and the hypotenuse as 13

A. 5/12

B. 12/13

C. 5/13

D. 12/5

Answer 1

It depends how you name the sides of triangle.
Look at picture at the result.


`cos\alpha=(12)/(13)\\ cos\beta=(5)/(13)`

PS. Sorry for my terrible drawing but I did it as fast as possible :)