What are the sine, cosine, and tangent of 3 pi over 4 radians?

Question

melissa07 · Answer

@YanaSidlinskiy

melissa07 · Answer

@helpmemath123

yanasidlinskiy · Answer

4pie/3 = 240 degrees 
sin 240 = - sqrt 3/2 
cos 240 = -1/2 
tan 240 = sqrt 3

melissa07 · Answer

thats not any of the choices 

A. sin Θ = square root 2 over 2; cos Θ = negative square root 2 over 2; tan Θ = -1

B. sin Θ = negative square root 2 over 2; cos Θ = square root 2 over 2; tan Θ = 1

C. sin Θ = square root 2 over 2; cos Θ = negative square root 2 over 2; tan Θ = 1

D. sin Θ = negative square root 2 over 2; cos Θ = square root 2 over 2; tan Θ = -1

melissa07 · Answer

wouldn't 3pi/4=135 degrees?

melissa07 · Answer

@shinebrightlikeadimon 
@Lyrae

melissa07 · Answer

@whpalmer4 
@bbbbbbbbbbbbbbbbbb

anonymous · Answer

your flvs? @Melissa07

melissa07 · Answer

yes.

anonymous · Answer

me too what  lesson i can help you @Melissa07

melissa07 · Answer

10.01 Introduction to the Unit Circle

anonymous · Answer

do you have a kik so it will be easy to help you through?

melissa07 · Answer

No

anonymous · Answer

http://www.wolframalpha.com/input/?i=+sine+of+3+pi+over+4+radians%3F http://www.wolframalpha.com/input/?i=cosine+of+3+pi+over+4+radians%3F http://www.wolframalpha.com/input/?i=tangent+of+3+pi+over+4+radians%3F I think that's right...

anonymous · Answer

oh ok email me through the openstudy email then

anonymous · Answer

#1

#2

#3

In that order

whpalmer4 · Answer

Okay, do you have a unit circle diagram?

melissa07 · Answer

no i don't @whpalmer4

whpalmer4 · Answer

http://www.embeddedmath.com/downloads/index.php?item=unitcircle.php

melissa07 · Answer

oh okay i think i understand now , thank you ! @whpalmer4

whpalmer4 · Answer

Make yourself some flashcards and drill the unit circle every day...