please take a look at this image(adsbygoogle = window.adsbygoogle || []).push({});

http://a.imageshack.us/img715/8526/paint2.jpg [Broken]

there are 2 triangles. in these triangles r1,a,theta1 r2,a,theta2 are given. x1 and x2 are unknown. also the angle k is same for both triangles. i need to find this k. also i have data to draw series of tingles like these 2(i know r3,theta3,a ....etc). and all of them have the angle k. how to find it??

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Find the constant unknown angle of triangles series

**Physics Forums | Science Articles, Homework Help, Discussion**