- #1
TN17
- 47
- 0
Homework Statement
I will ask two questions since they are both under the same lesson.
1) Determine exact solutions for each if domain is xe [0, 2Pi]
2tan^2x -12 = 0
2)Solve the following equations on interval xe [0, 2Pi]
sin x - sinxtanx = 0
Homework Equations
There aren't really any equations - just a lot of identities, lol.
The Attempt at a Solution
For 1)
2tan^2x = 12
tan^2x = 6
x = arctan (squareroot 6)
I had trouble with this one because (squareroot 6) isn't part of any special triangles, so I don't know how to get exact values from it.
For 2)
sin - sintan = 0
sin- sinsin/cos = 0
sincos - sin^2 / cos = 0
I had trouble with this one because there are two different identities instead of one. I didn't know how to continue from there.
Thank you.