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Evaluate : secθ .cosecθ (90-θ ) - tanθ cot (90-θ )+ sin^2 55 + sin^2 35/ tan10 tan 20 tan 60 tan 70 tan 80

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Evaluate : 

secθ .cosec θ (90-θ ) - tanθ cot (90-θ )+ sin2 55 + sin2 35/ tan10 tan 20 tan 60 tan 70 tan 80

(a) 2 √ 3 (b) √ 3 /2 (c) 0 (d) None of these

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(a) secθ .cosec θ (90-θ ) - tanθ cot (90-θ )+ sin2 55 + sin2 35/ tan10 tan 20 tan 60 tan 70 tan 80

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