Question

Given sinx=0.3, what is cosx? Enter your answer as a decimal in the box. Round only your final answer to the nearest hundredth.

Answer 1

Answer:

cos x = 0.95

Step-by-step explanation:

Given: sinx = 0.3

Squaring both sides, we get

$sin^2$x = 0.09

We know that , $sin^2 x + cos^2 x = 1$

So, $sin^2 x = 1- cos^2 x$

Therefore

1-$cos^2x$= 0.09

$cos^2x=$ 0.91

∴ cos x = 0.95

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