For each angle θ, find the exact values of cos θ and sin θ.

1. 225°

Question

For each angle θ, find the exact values of cos θ and sin θ.

1. 225°

gudden · Answer

do you know about the way the values of sines and cosines are repeated? I mean, the pattern.

gudden · Answer

@Leahc246 ?

leahc246 · Answer

I don't believe I do at the moment. I am trying to teach myself calc and this problem came up. Can the answers only be 0 or 1?

leahc246 · Answer

@gudden

gudden · Answer

no... for both, sine and cosine, the values range between -1 to 1

and have your ever looked over the following formulas?

leahc246 · Answer

I have seen those before! @gudden

gudden · Answer

cool.. now try to divide 225, into a multiple of 90 + something.

and you'd get 180 + 45 

now, apply the respective formula on any the lengthy counterpart..