In a triangle ABC, right-angled at C, if \(sec A={13\over5}\), then find the value of \(\frac{1+ \sin A}{\cos B}\).
\(\sqrt{sec^2 \theta+cosec^2\theta}\) is equal to
If a pole of 12 m height caste a shadow of 4√3 m long on the ground then the sun's angle of elevation at that instant is
A person observes that the angle of elevation at the top of a pole of height 5 meters is 30°. Then the distance of the person from the pole is:
By selling an article for Rs. 1,170, Elisa suffers as much loss as she would have gained by selling it at a profit of 22%. If she sells it for Rs. 1,450, then her profit/loss per cent (correct up to one decimal place) is: