Question

If sin thetha =1/2 then find the value of cos thetha .​

Answer 1

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$\longmapsto \sf \sin \theta = \frac{1}{2}$

$\longmapsto \sf\sin \theta = \sin30$

$\longmapsto \sf\theta = 30 \degree$

Therefore

$\longmapsto \sf\cos \theta = \cos30 \degree$

$\longmapsto\boxed{\green{ \sf\cos30\degree = \frac{ \sqrt{3} }{2}}}$

Answer 2

$\sin( \theta) = \dfrac{1}{2}$

$\sin( \theta ) = \sin(30 \degree)$

$\theta = 30 \degree$

$\implies \boxed{ \cos(30 \degree ) = \dfrac{ \sqrt{3} }{2}}$