If cosecθ - cotθ = \({1 \over a}\), then \( {a^2-1 \over a^2+1}\) is
Find the quarterly instalment that will discharge a debt of Rs 2120 due in 1 years at 16% per annum simple interest.
a.sinθ + b.cosθ = c, then find the value of a.cosθ - b.sinθ
If \((cos^2\theta-1)(1+tan^2\theta)+2tan^2\theta = 1\), \(0^0\leq\theta\leq90^0\) then \(\theta\) is :
A can do a work in \( 7 \frac{1}{2} \) hours and B can do the same work in \( 10 \frac{1}{2} \) hours. If they work together for \(3 \frac{1}{2}\) hours, then what part of the work will be left out?