If \(\alpha+\beta=90°\) , then the value of \({(1-sin^2\alpha)(1-cos^2\alpha)*(1+cot^2\beta)(1+tan^2 \beta)}\) is.
\(\rm \frac{cosA+cosB}{sinA-sinB}=\)
If θ is an acute angle and tan θ + cot θ = 2, then the value of \(tan^{200} θ + cot^{200} θ\) is:
The value of \(\sqrt{cosec\theta-cot\theta\over cosec\theta+cot\theta}\)\(\div {sin\theta\over1+cos\theta}\) is equal to :
An article was sold at a profit of 12%. If the cost price would be 10% less and selling price would be Rs.5.75 more, there would be profit of 30%. Then at what price it should be sold to make profit of 20%.