Trig Identity math question.

HBK

Jul 2010
6
0
In TrianglePQR:

3sinP + 4 CosQ= 6
and
SinQ +3 CosP= 1

a)find Sin(P+Q)
b)Determine the measure of angle R in radians.

If any one can help me solve this, I would really appreaciate it!
 
Last edited by a moderator:

pickslides

MHF Helper
Sep 2008
5,237
1,625
Melbourne
Have you seen this?

\(\displaystyle a \sin x + b \cos x= \sqrt{a^2+b^2}\sin(x+\psi) , \psi = \arctan\left(\frac{a}{b}\right)\)
 
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pickslides

MHF Helper
Sep 2008
5,237
1,625
Melbourne
Now you have, try to apply it to your problem.
 

HBK

Jul 2010
6
0
Ok, I will give it a shot.
 

HBK

Jul 2010
6
0
Sorry for the double post, what would I use for Y.
 

HBK

Jul 2010
6
0
Ok thanks! I really need this problem solved. Hopefully this works out!