Question

Use the graph of y=sin2theta to find the value of sin 2theta for theta=pi/4 radians.

Answer 1

Explanation:

`(pi)/(4)` will be in the mid of 0 and
`(pi)/(2)`

And by seeing the value we can get it as 1 and by solving

`sin2\alpha \\= sin(2\alpha )\\= sin(2*45)\\= sin(90)\\= 1`