2 years ago

If tan θ=−52 and θis a quadrant II angle, what is cosθ?

Mathematics

1 answer:

marysya [2.9K]2 years ago

7 0

The value of cos theta is -2/√29

<h3>Trigonometry identity</h3>

A trigonometry identity are expressions expressed as cosine, tangent, sine.

Given the expression below

tan θ =−5/2 = opp/adj

Determine the hypotenuse

hyp² =5^2 + 2^2

hyp² = 25 + 4

hyp = √29

Determine the value of cos theta

cos theta= adj/hyp

cos theta= -2/√29

Hence the value of cos theta is -2/√29

Learn more on trigonometry identity here: brainly.com/question/7331447

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