Question

how is this angle equal to theta?​

Answer 1

Answer:

yes angle equal to theta

Explanation:

Just remember the cosine of an angle is the side adjacent to the angle divided by the hypotenuse of the triangle. In the diagram, the adjacent side is a and the hypotenuse is c , so cosθ=ac . To find θ , you use the arccos function, which has the same relationship to cosine as arcsin has to sine.

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