(2x-1)×4=8x-4
I hope it helps ;)
Sin2x=2sinxcosx, cos2x=1-2sin^2x
sin(2x)+cos(3x)=2sinxcosx+cos(x+2x)
cos(x+2x)=cosx(1-2sin^2(x))-sinx2sinxcosx
sin(2x)+cos(3x)=2sinxcosx(1-sinx)+cosx(1-2sin^2(x))
2π radians is equal to 360° which is just π rad/180° so:
120°(π/180°)=2π/3
Hello.
Answer: 70
New equation: −5(−3^2)−(8)(−3)+1
How to get the answer:
(−5)(−9)−(8)(−3)+1
=45−(8)(−3)+1
=45−(−24)+1
=69+1
=70
Have a nice day
