How to prove geometrically that sin2A= 2 sin AcosA
Answers
Answered by
1
given equation is
sin2a=2sinacosa
sin2a=2sinacosa
Answered by
1
Sin 2a = sin (a+a)
=sin a Cos a + cos a sin a
=2sin a cos a
=sin a Cos a + cos a sin a
=2sin a cos a
makku73:
from where you put cosA
This proof is not geometrical. Please send the geometrical proof
sin(A+B) =sin A Cos B + cos A sin B is formula
oo
i understand
thnks
Welcome
Similar questions