# Basic trig problem

• October 21st 2009, 03:02 PM
SlightlyChaotic
Basic trig problem
I missed some school due to the flu, so I missed the concept completely.

My question:

In the equation sinΘ=0.85 (In degrees, 0≤Θ≤360), how do I solve for theta?
• October 21st 2009, 03:10 PM
satis
Are you allowed to use a calculator? If so, there's a sin-1 function. You'd just sin-1(.85) and get your result. Make sure you're in degrees mode on the calculator.

If you're not supposed to use a calculator, I'm sorry, I don't know.
• October 22nd 2009, 01:21 AM
The Second Solution
Quote:

Originally Posted by SlightlyChaotic
I missed some school due to the flu, so I missed the concept completely.

My question:

In the equation sinΘ=0.85 (In degrees, 0≤Θ≤360), how do I solve for theta?

From a calculator, $\Theta = 58.2^0$ (correct to 1 decimal place). From symmetry of the unit circle another solution is $\Theta = 180^0 - 58.2^0 = ....$