Evaluate: 3 cos 80° cosec 10° + 2 cos 59° cosec 31°
The value of 80° in radian is
A and B working alone can complete a work in 8 days and 12 days, respectively. They started working together, but A left 2 days before completion of the work. In how many days was the work completed?
Find the value of \(cot30°+cot75°+cot45°-sin90°+sin45° \over sin60°+cos30°+ tan15°+cos45°\)
If A, B, and C are the angels of a △ABC then the following is equal to :sin\(({B+C \over2})\)