SOLUTION: Solve the following equations given that 0° ≤ θ < 360° :
A) cos^2 θ - 1 = 0
B) 2 sin θ cos θ = cos θ
Thank You
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-> SOLUTION: Solve the following equations given that 0° ≤ θ < 360° :
A) cos^2 θ - 1 = 0
B) 2 sin θ cos θ = cos θ
Thank You
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Question 967031: Solve the following equations given that 0° ≤ θ < 360° :
A) cos^2 θ - 1 = 0
B) 2 sin θ cos θ = cos θ
Thank You Answer by lwsshak3(11628) (Show Source):
You can put this solution on YOUR website! Solve the following equations given that 0° ≤ θ < 360° :
A) cos^2 θ - 1 = 0
cos^2 θ=1
cos θ=±√1=±1
θ=0, 180˚
..
B) 2 sin θ cos θ = cos θ
divide both sides by cos θ
2sin θ=1
sin θ=1/2
θ=30˚, 150˚
(