Can s/o help me solve this system of linear equations?

Question

anonymous · Answer

attachment

anonymous · Answer

can't use matrices

jamesj · Answer

I can't read .docx on this computer

anonymous · Answer

attachment

anonymous · Answer

This looks like a rotation matrix to me.

anonymous · Answer

but i cant use a matrix i wish i cld but cant i need to solve algabraically

anonymous · Answer

I gotta rub but can someone please solve my question and post it here? 
I will be back tomorrow to read it over please???

anonymous · Answer

*run

jamesj · Answer

rld, that's a bit lame.  Solve it the same way you solve these equations in high school if needed, using substitution.

anonymous · Answer

looool

anonymous · Answer

idk it seemed confusing to me but maybe i just need more time to sit over iit

jamesj · Answer

From the first equation, write x = something in y
then substitute that into the second equation.

wasiqss · Answer

james we need to evaluate in terms of theta i guess

anonymous · Answer

ohhh ya i am stupid

jamesj · Answer

just leave theta as a constant.

anonymous · Answer

ya that was pretty elementary

anonymous · Answer

the trig just threw me off over there

anonymous · Answer

Thank you :D