a.sinθ + b.cosθ = c, then find the value of a.cosθ - b.sinθ
If θ be positive acute angle and \(5cosθ + 12sinθ = 13\), then the value of cosθ is
The greatest value of sin4θ + cos4θ is
25 persons can complete a work in 60 days. They started the work. 10 persons left the work after x days. If the whole work was completed in 80 days, then what is the value of x ?
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?