need someone to check my work yet again

[abel muroi]

This time i was given three problems, but unfortunately i cant show my work here because i cant draw a unit circle, so i just need someone to tell me if i have the correct answer




1) give the reference angle (in radians) for the angle 7pi/6

my answer: pi/6 or 1/6 pi


2)find tan 3pi/4

my answer: -1


3) give the exact value of sin 225

my answer: -(squareroot 2)/2


Did i give the incorrect answer to any of these three problems?

 

[Steven G]

This time i was given three problems, but unfortunately i cant show my work here because i cant draw a unit circle, so i just need someone to tell me if i have the correct answer




1) give the reference angle (in radians) for the angle 7pi/6

my answer: pi/6 or 1/6 pi


2)find tan 3pi/4

my answer: -1


3) give the exact value of sin 225

my answer: -(squareroot 2)/2


Did i give the incorrect answer to any of these three problems?

They are all correct. Good job