Sagot :
Yo sup??
The given expression is in the form
sinAcosB+cosAsinB
we know that
sin(A+B)=sinAcosB+cosAsinB
therefore
sin40cos20+cos40sin20=sin(40+20)
=sin60
=√3/2
Hope this helps.
Yo sup??
The given expression is in the form
sinAcosB+cosAsinB
we know that
sin(A+B)=sinAcosB+cosAsinB
therefore
sin40cos20+cos40sin20=sin(40+20)
=sin60
=√3/2
Hope this helps.