[Note: i need help really badly. I only have 2 hours left]
Find all solutions of the following equations. Be sure to check for extraneous solutions. show work
1). 3cosθtan^(2)θ-cosθ=0
2). tan (3θ)+1=0
#1
cosθ (3tan^2θ - 1) = 0
so,
cosθ = 0
or
tanθ = ±1/√3
Those are standard familiar values, right?
#2
tan3θ = -1
3θ = 3π/4 or 7π/4 + n*π/3