how do you prove sin (a+b) = sin a cos b + cos a sin b geometrically ?


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Question Number 103887 by bemath last updated on 18/Jul/20

$h o w d o y o u p r o v e \sin (a + b) = \sin$ $a \cos b + \cos a \sin b$ $g e o m e t r i c a l l y ?$
Commented by $@y@m last updated on 18/Jul/20
https://medium.com/@nubtrek/easy-with-sin-a-b-proof-vuja-de-50c15fca3344
Commented by bemath last updated on 18/Jul/20

$b l a n k i m a g e s i r$
Commented by $@y@m last updated on 18/Jul/20

$s c r o l l u p t h e s c r e e n a n d c h e c k .$
	Answered by john santu last updated on 18/Jul/20

	Commented by bemath last updated on 18/Jul/20

	$t h a n k y o u$
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