# Solve Trig Equation with one unknown angle

• November 11th 2012, 08:12 PM
jeremy5561
Solve Trig Equation with one unknown angle
I have the following trig problem that needs a solution:
$173cos\theta-300sin\theta=80$
Thanks.
• November 11th 2012, 09:13 PM
MarkFL
Re: Solve Trig Equation with one unknown angle
Hint: use a linear combination identity on the left side.
• November 12th 2012, 04:57 AM
jeremy5561
Re: Solve Trig Equation with one unknown angle
Interestingly, I didn't learn to do that yet. This is a physics problem that could have been solved by drawing it out and using the Sine and Cosine laws, but my teacher is asking us to do it in component. I'll look that up, thanks.