Class 8 / IIT Foundation Plus Maths / Multiples And Sub-Multiples / Theorem 1

Multiples And Sub-Multiples

Multiples And Sub-Multiples Theorem : When cos2A is known, then the value of sinA, cosA tan A and cotA in terms of cos2A   i)  \( \sin A = \pm \sqrt {\frac{{1 - \cos 2A}} {2}} \)