SOLUTION: sin2θ-2sinθ=x. What is X equivalent to?

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Question 1197935: sin2θ-2sinθ=x. What is X equivalent to?
Found 2 solutions by greenestamps, math_tutor2020:
Answer by greenestamps(13215) About Me  (Show Source):
You can put this solution on YOUR website!


Use the double angle formula for sin2θ:

sin2θ-2sinθ = 2sinθcosθ-2sinθ = 2sinθ(cosθ-1)

The result could be expressed in other forms....

Answer by math_tutor2020(3817) About Me  (Show Source):
You can put this solution on YOUR website!

When you wrote the sin2θ portion, did you mean to say sin%282theta%29 or did you mean sin%5E2%28theta%29?

sin%282theta%29 is the same as sin(2θ) or sin(2theta)

sin%5E2%28theta%29 is the same as sin^2(θ) or sin^2(theta)

Please use parenthesis to indicate which terms are inside or outside them.