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If sin θ=35 and cos ϕ=−1213 where θand ϕ both lie in the second quadrant, find the values of (i) sin (θ−ϕ), (ii) cos (θ+ϕ), (iii) tan (θ−ϕ). |
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Answer» If sin θ=35 and cos ϕ=−1213 where θand ϕ both lie in the second quadrant, find the values of (i) sin (θ−ϕ), (ii) cos (θ+ϕ), (iii) tan (θ−ϕ). |
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