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Mathematics, 16.05.2021 06:10 ale1910

If θ is a second-quadrant angle and cosθ = - 2/3, then tanθ= a. -2 (sqrt 5)/5
b. - (sqrt 5)/2
c. - (sqrt 5)/3

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If θ is a second-quadrant angle and cosθ = - 2/3, then tanθ= a. -2 (sqrt 5)/5
b. - (sqrt 5)/2...
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