Question

if sin=3/4,find the value ofcos

Answer 1

$hey \: mate \: here \: \: is \: ur \: ans \\ \: \: we \: know \: that \: \sin {}^{2} ( \alpha ) + \cos {}^{2} ( \alpha ) = 1 \\ \: so \: \cos( \alpha ) = \sqrt{(1 - \sin {}^{2} ( \alpha ) } \\ \cos( \alpha ) = \sqrt{(1 - 9 \div 16) } \\ \: \cos( \alpha ) = \sqrt{(7)} \div 4$

Answer 2

hope so I am correct