Hello Sarvesh Ideally, you should learn only one formula (sin2 x + cos2 x = 1), and convert everything else into sin and cos. That's what we have done in the last part.

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U have solved sub question(4) of Q.no.4 of ex.8.4 in some long way. Th

Davneet Singh

Hello Sarvesh

Ideally, you should learn only one formula (sin² x + cos² x = 1),

and convert everything else into sin and cos. That's what we have done in the last part.

Written on Sept. 10, 2018, 1:17 p.m.

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Class 6