There are two verticals posts, one on each side of a road, just opposite to each other.One post is 108 metre high. From the top of this post, the angles of depression of the top and foot of the other post are 30° and 60° respectively. The height of the other post, in metre is:

A can do a piece of work in 20 days while B can do it in 30 days. They work together for 10 days and the rest of the work is done by C in 5 days. If they get Rs 560 for the whole work, how much money will A get?

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.

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: