SOLUTION: Find angle a of a triangle with sidec=13 and side b =12

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Question 432419: Find angle a of a triangle with sidec=13 and side b =12
Answer by belle3833(46) About Me  (Show Source):
You can put this solution on YOUR website!
assuming the triangle is a right-angled triangle;
if b is the side adjacent to angle a and c is the hypotenuse, we use the cosine ratio
cos%28theta%29=%28adjancent%29%2F%28hypotenuse%29
cos%28theta%29=%2812%29%2F%2813%29
theta=23 to the nearest degree