March 9 2011

Hi! Im Kyle.so...mr P. teached us on how to solve for the angle.While he was teaching, the fire alarm rang and I was actually hoping for a real fire so that the class would be cancelled but too bad it isnt.lol just kidding.and we got to have two of our quizzes back.

So here's how it actually works...

First,find the reference angle

sinθ = 0.78615

θ = sin-1(0.78615)

θ = 51.82716465

Second, know which quadrant it belong by using the cast rule and use their following formulas

For this equation its Quadrant I and II

Quadrant I : θ = θr

θ = 51.8°

Quadrant II : θ = 180° - θr

θ = 180° - 51.82716465°

θ = 128.2°

Then, you would know the value for θ

θ = 51.8°, 128.2°