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 is the area of the parallelogram?​
A ___________ cost system would be used by a company that makes custom, made-to-order wedding cakes
which is the answers
Subtract. Write your answer in simplest for. 2/3 - 3/8
An animal is born with a random mutation that results in larger than normal ears for its species. As a result, the animal is able to hunt both small and large p
The cone shaped roof has the height of 30ft and the radius of 15ft find it's lateral area and the surface area
A square with side length s has an area of 324 square centimeters. This equation shows the area of the square ^{s^2}is 324
Are my answers correct?
1) Find the slope of the line 2) find the slope between the two points help please, thank you
Which terms best describe the setting at the end of the passage? A. open and moonlit B. isolated and mysterious C. dim and misty D. quiet and murky