The Success Center Mithi

In a right triangle, opposite=120, adjacent=126, hypotenuse=174. What is cos θ?

A) 127/174

B) 18/25

C) 29/21

D) 21/29

Answer: D

Explanation: Cosine equals adjacent side divided by hypotenuse; use the standard angle value when given.
Using the values in this question gives 21/29 as the correct answer.

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