But how would I know to select the 3rd quadrent? |That's the part I dont get.
A and T is where your answer for tan is positive. If your answer for tan came out negative, then you would look in the S (2nd quadrant) and C (4th quadrant).
A and T is where your answer for tan is positive. If your answer for tan came out negative, then you would look in the S (2nd quadrant) and C (4th quadrant).
But I don't understand how that's related to "cos" it's asking to satisfy cos x =-0.8 as well.
Umm I don't think so. When doing sin^-1(-0.6), i get a negative answer. I have to now look in the T and C sections. This gives me two answers. I need one value of x.
The first angle is 36.9 and is in the first quadrant where tan is positive. Tan is also positive in the 3rd quadrant so to get an angle in the third quadrant do 180 +36.9 which gives you 216.9
The first angle is 36.9 and is in the first quadrant where tan is positive. Tan is also positive in the 3rd quadrant so to get an angle in the third quadrant do 180 +36.9 which gives you 216.9
Therefore values of tan are 216.9 and 36.9
I just meant the angles you get for Tan when looking in the first and third quadrant.