# Simultaneous equations help!

Hey guys, im currently studying Engineering, and its only my first year. Im having trouble with one of the simultaneous equations i have made from a physics question. I dont know how to solve this because the uknowns are both angles.

I have attached a photo of the simultaneous equation

Thanks :)

#### Attachments

• 39.5 KB Views: 307

Related Calculus and Beyond Homework Help News on Phys.org
ehild
Homework Helper
This is unsolvable. Show the original Physics question.

ehild

I have attached the original physics question,

the parameters were given to me online, which are

Weight of A= 144N
Weight of B = 229N
weight of C = 202N

#### Attachments

• 27.5 KB Views: 283
ehild
Homework Helper
The right side of your second equation in the previous post is not zero. The vertical components of the tensions in the strings must balance the weight of A.

ehild

Thank you so much Ehild for your help :), i completely missed that.

ehild
Homework Helper
Can you solve the problem now?

ehild

sadly not, I had high hopes, and gave it a shot. But i still dont know how to solve a simultaneous equation with the uknowns as the angles..

ehild
Homework Helper
It is always very useful to move the terms with different angles on the different sides of the equation, square both sides, then add up the equations, and replacing sin()2 +cos()2=1

ehild