Suppose $cos θ = \frac{3}{5}$ $cos theta = 3/5$ , what is $sin θ$ $sin theta$ ?

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Suppose $cos θ = \frac{3}{5}$ $cos theta = 3/5$ , what is $sin θ$ $sin theta$ ?

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Answer 1 · 2017-08-13T02:13:29

Since cos is the ratio of adjacent / hypotenuse, we have a right triangle with adjacent side of 3 units and hypot of 5.
Use Pythagoras to solve this right triangle for the opposite side.
$3^{2} + o p p^{2} = 5^{2}$ $3^2 + opp^2 = 5^2$
Opposite =4
Sin theta = opp/hyp. So this will ne 4/5

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Suppose $cos θ = \frac{3}{5}$ $cos theta = 3/5$ , what is $sin θ$ $sin theta$ ?

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