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The terminal side of θ passes through the point (7, −1) .

What is the exact value of sinθ in simplified form?

 

−2√10

72√10

2√10

−72√10

 Jan 16, 2020
 #1
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+1

The terminal side of θ passes through the point (7, −1) .

What is the exact value of sinθ in simplified form?

 

If I understand the question properly, none of those are the answer

 

The point is in the forth quad so sin is negative

opposite is 1

adjacent is 7

 

\(hypotenuse\;\; is\;\; \sqrt{50}=5\sqrt2\\ sin \theta = \frac{-1}{5\sqrt2}  = \frac{-\sqrt2 }{ 10}\)

.
 Jan 16, 2020

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