- Find the six trigonometric functions of 2θ, if sinθ=2/7 and π/2 < θ < π?

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Microcontroller problem help. We went over this in class but I didn't really understand it.? What is 1/5+2/5=? Find approximate solutions for the equation in the interval -pi < x < pi :
tan x=-3 csc x? Why doesn't help have options to rate reviewers? They have useful, cool, helpful. But, why can't they have other ones for insane people? Help please <3?

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