Posted by **Paige** on Friday, February 18, 2011 at 1:43pm.

find (s+t) given that cos s=1/3 with s in quad I and sin T=-1/2 with t in quad IV

- Trig -
**Reiny**, Friday, February 18, 2011 at 4:59pm
I have a feeling that you want exact values for

sin(x+t) or cos(s+t)

the way it stands, just use your calculator to find each of the angles, then add them up.

- Trig -
**Paige**, Friday, February 18, 2011 at 9:27pm
No it is to find the exact value of the expression using the provided information. Find Tan (S+T) given that cos s=1/3 with s in quad I and sin T= -1/2 with T in quad IV

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