Question

What are the sine, cosine, and tangent of 5 pi over 4 radians?

Answer 1

Here are the answers:

sin Θ = square root 2 over 2; cos Θ = negative square root 2 over 2; tan Θ = −1

sin Θ = negative square root 2 over 2; cos Θ = negative square root 2 over 2; tan Θ = 1

sin Θ = square root 2 over 2; cos Θ = negative square root 2 over 2; tan Θ = 1

sin Θ = negative square root 2 over 2; cos Θ = square root 2 over 2; tan Θ = −1

Answer 2

usually you can get those from a Unit Circle

Answer 3

@Squirrels

Answer 4

@Ibbutibbu.

Answer 5

@dan815

Answer 6

do you have a Unit Circle around?

Answer 7

just use a calculator

Answer 8

ok

Answer 9

or learn special triangles

Answer 10

i know special triangles

Answer 11

45-45-90
30-60-90