What is the range of the values of k such that k Cos A - 3 Sin A = k + 1
has a real solution?
Solve for the parameter a for which the sum of all of the real valued roots to the equation sin(√(ax – x2)) = 0 is exactly equal to 100.
What would be the value of Sin(50 + A) - Cos(40 - A), share your working also?