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28 votes
28 votes
An answer and explanation on how to solve this would be most appreciated.

An answer and explanation on how to solve this would be most appreciated.-example-1
User Wersimmon
by
2.7k points

1 Answer

21 votes
21 votes

Answer:

cos theta = 5/13

Explanation:

sin theta = opp side / hypotenuse

opp side = 12 and hypotenuse = 13

Using the pythgorean theorem

opp ^2 + adj ^2 = hypotenuse ^2

12 ^2 + adj^2 = 13^2

144 + adj ^2 = 169

adj^2 = 169-144

adj^2 = 25

Taking the square root of each side

adj = 5

cos theta = adj / hypotenuse

cos theta = 5/13

User Mdesantis
by
2.6k points