SOLUTION: In the graph, what is cos ⊖? https://postimg.org/image/c658b84mp/ A.) {{{ -0.8 }}} B.) {{{ -0.6 }}} C.) 0.8 D.) {{{ 0.6 }}} Thanks.

Algebra ->  Test  -> Lessons -> SOLUTION: In the graph, what is cos ⊖? https://postimg.org/image/c658b84mp/ A.) {{{ -0.8 }}} B.) {{{ -0.6 }}} C.) 0.8 D.) {{{ 0.6 }}} Thanks.      Log On


   

Question 1058824: In the graph, what is cos ⊖?
https://postimg.org/image/c658b84mp/
A.) +-0.8+
B.) +-0.6+
C.) 0.8
D.) +0.6+
Thanks.
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Analyze according to the acute angle which theta is; as if it were in quadrant 1.

cos%28theta%29=3%2Fsqrt%283%5E2%2B4%5E2%29

cos%28theta%29=3%2Fsqrt%2825%29

cos%28theta%29=3%2F5

BUT are you just interested in theta, or are you really interested in WHERE the point (-3,-4) is, including the 180 degrees as part of the rotation from standard position?