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If cot2 θ + cot4 θ = 2, then the value of 2 sin4 θ + sin2 θ is:
Find the quarterly instalment that will discharge a debt of Rs 2120 due in 1 years at 16% per annum simple interest.
Which of the following is true for 0° < θ < 90° ?
Find the value of \(cot30°+cot75°+cot45°-sin90°+sin45° \over sin60°+cos30°+ tan15°+cos45°\)
Sixteen men can finish a work in 8 days. Eight men and nine women working together can finish the same work in 10 days. In how many days will twenty women finish the same work?