Wb Jee
Trigonometric Functions And Equations
WB JEE 2011
MCQ+1 / -0.252011
If \(\sin \theta = {{2t} \over {1 + {t^2}}}\) and \(\theta\) lies in the second quadrant, then cos \(\theta\) is equal to
Wb Jee
WB JEE 2011
If \(\sin \theta = {{2t} \over {1 + {t^2}}}\) and \(\theta\) lies in the second quadrant, then cos \(\theta\) is equal to