haamcsaai
haamcsaai haamcsaai
  • 04-04-2019
  • Mathematics
contestada

Prove this identity using the product-to-sum identity for sine:
[tex]sin^2x=\frac{1-cos(2x)}{2}[/tex]
umm pls

Respuesta :

LammettHash
LammettHash LammettHash
  • 04-04-2019

It follows from

[tex]\cos2x=\cos(x+x)=\cos x\cos x-\sin x\sin x=\cos^2x-\sin^2x=1-2\sin^2x[/tex]

[tex]\implies\cos 2x-1=-2\sin^2x[/tex]

[tex]\implies\sin^2x=\dfrac{1-\cos2x}2[/tex]

Answer Link

Otras preguntas

What adds up to 14 and multiplies to negative 576?
which of the following happens in a heat pump? a. the compressor increases the pressure and temperature pf the refrigerant b. the compressor blows cold refriger
what does Tandem Repetitive DNA sequences mean
when did the The Korean War officially began in 1950
The accelerated growth and advances in taxonomy as a science occurred during
Use the discriminant to find the number of real roots in Y = x^2 – 6x + 9
is the paint on ORIGINAL adidas superstar splash repousse??
Triangle ABC is translated on the coordinate plane below to create triangle A'B'C'. If parallelogram EFGH is translated according to the same rule that transla
How do u start your car with an EFI system
the federalist papers were written by which future president