The value of (tan29°cot61°-cosec261°)+cot254°-sec236°+(sin21°+sin23°+sin25°+.....+sin289°) is:
If the operating cost of 6 burners for 6 hours in 8 days is Rs. 450 then find the number of burners if used for 5 hours for 10 day with operating cost of Rs.1250.
\(\sqrt{sec^2 \theta+cosec^2\theta}\) is equal to
A is thrice as efficient as B. A takes 24 days less than B to complete a work. If they work together, in how many days, will the work be completed?
The reduction of 15% in the price of salt enables a person to buy 2 kg more for ₹272. The reduced price of salt per kg (in ₹) is: