cos(θ)=-4/5 and θ is in the 2nd quadrant, find sin(θ) sin(θ)=??

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A: Explanation of the answer is as follows

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A: Given equation is By using the identity we get

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A: Given, cot θ=6 in qudrant IIIcot θ=6 and π≤θ≤3π2Now, θ=cot-1(6)+π θ=9.46°+π θ=189.46°Thus, θ=189.46°

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A: We can make it easier for you.

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A: Use words to describe the given formula.            sin·sin·=12cos·-·-cos·+·

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A: topic- trigonometric ratios sin(180-θ)=sin(θ)cos(180+θ)=-cos(θ)