Question

If sin theta=12/13,than find cos theta​

Answer 1

Answer:

5/13

Explanation:

If

$\sin( \alpha ) = \frac{12}{13}$

then

$\cos( \alpha ) = \sqrt{1 - { \sin }^{2} \alpha }$

$= \sqrt{1 - {( \frac{12}{13}) }^{2} }$

$= \sqrt{ \frac{169 - 144}{169} }$

$= \sqrt{ \frac{25}{169} }$

$= \frac{5}{13}$

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