Posted by **Anonymous** on Friday, March 1, 2013 at 12:46pm.

draw an angle x in the 1st quadrant with sinx=3/5, and an angle y in the 2nd quadrant with cosy=-12/13, then determine the exact value of tan(x+y).

- Trig needs help -
**PsyDAG**, Friday, March 1, 2013 at 1:05pm
Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.

- Urgent -
**Steve**, Friday, March 1, 2013 at 5:31pm
in QI, cosx = 4/5

in QII, sinx = 5/13

now you can get tanx and tany, and use the formula for tan(x+y)

## Answer This Question

## Related Questions

- trig - Angle x is in the second quadrant and angle y is in the first quadrant ...
- trig - Angle x is in the second quadrant and angle y is in the first quadrant ...
- Math - Angle x is in the second quadrant and angle y is in the first quadrant ...
- Pre Calculus - Determine the quadrant in which a 130° angle lies. a. 4th ...
- Pre Calculus - Determine the quadrant in which an angle, θ, lies if θ...
- Pre Calculus - Determine the quadrant in which an angle, θ, lies if θ...
- Pre Calculus - Determine the quadrant in which an angle, θ, lies if θ...
- pre calc - Find the exact value of sin(x-y) if sinx=-3/5 in Quadrant III and ...
- maths - if sinx=3/5,cosy=12/13,where x and y both lie in 2nd quadrant, find the ...
- Pre-Cal - [Note: This one... is super hard for me :( I really need help. please...

More Related Questions