What is the equation of the line passing through the point (1,3) and making an angle of -45° with the positive x-axis?

If the selling price is Rs 2125 after getting a discount of 15% what was the marked price?

If x + y = 13 and x2 + y2 = 89, then find xy is

Simplify 576b3x2a4z3/36a3b2z

If cosA/(1 - sinA) = x, then the value of x is

If √(1 - cos2A) = x, then the value of x is

Reflection of the point (3,-6) in the y-axis is

Mandeep works 3 times as fast as Sampat. If Sampat can complete a job alone in 60 days, then in how many days can they together finish the job?