Question

Formula of Sin3a ???

Answer 1

♠Answer♠

Superman : " Sin3a = 3sin a -4sin³a "

wishing you a good luck for Trigonometry !

#SupermanINFINITY

Answer 2

Hey there,

Formula of Sin3a

sin3a=3sina-4sin^3a.

we can write ,

sin(3a) = sin(2a + a) = sin(2a)cos(a) + cos(2a)sin(b).

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BEST OF LUCK ;-)

#akashmandal.