H HBK Jul 2010 6 0 Jul 11, 2010 #1 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: Jul 11, 2010

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!

pickslides MHF Helper Sep 2008 5,237 1,625 Melbourne Jul 11, 2010 #2 Have you seen this? \(\displaystyle a \sin x + b \cos x= \sqrt{a^2+b^2}\sin(x+\psi) , \psi = \arctan\left(\frac{a}{b}\right)\) Reactions: HBK

Have you seen this? \(\displaystyle a \sin x + b \cos x= \sqrt{a^2+b^2}\sin(x+\psi) , \psi = \arctan\left(\frac{a}{b}\right)\)

pickslides MHF Helper Sep 2008 5,237 1,625 Melbourne Jul 11, 2010 #4 Now you have, try to apply it to your problem.

pickslides MHF Helper Sep 2008 5,237 1,625 Melbourne Jul 11, 2010 #7 Using a and b pickslides said: Have you seen this? \(\displaystyle \psi = \arctan\left(\frac{a}{b}\right)\) Click to expand...

Using a and b pickslides said: Have you seen this? \(\displaystyle \psi = \arctan\left(\frac{a}{b}\right)\) Click to expand...

H HBK Jul 2010 6 0 Jul 11, 2010 #8 Ok thanks! I really need this problem solved. Hopefully this works out!