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The terminal side of θ passes through the point  (−5,−6).

What is the exact value of cosθ in simplified form?

 

−6√61/61

−5√61/61

6√61/61

5√61/61

Guest Dec 13, 2017

Best Answer 

 #1
avatar+26406 
+1

The adjacent length is 5 and the hypotenuse is √(52+62) → √61

 

The point is in the third quadrant so the cosine is negative: -5/√61 → -5√61/61

Alan  Dec 13, 2017
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1+0 Answers

 #1
avatar+26406 
+1
Best Answer

The adjacent length is 5 and the hypotenuse is √(52+62) → √61

 

The point is in the third quadrant so the cosine is negative: -5/√61 → -5√61/61

Alan  Dec 13, 2017

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