If sinQ + cosQ = 1, then prove that sin2Q = 0.

find the equation of the line through the intersection of the lines x+2y-3=0 and 4x -y+7=0 and which is parallel to 5x +4y -20=0.

Find an increasing A.P in which the sum of the first 3 terms is 27 and the sum of their squares is 275?

sin10sin30sin50sin70=1/16. Prove

the first three hours of typhoon, the rain fell at a constant rate of 25mm per hour.

The typhoon slows down for an hour and started again at a constant rate of 20 mm

per hour for the next two hours. Write a piecewise function that models the amount

of rainfall as function of time.

If sinQ + cosQ = 1, then prove that sin2Q = 0.

find the equation of the line through the intersection of the lines x+2y-3=0 and 4x -y+7=0 and which is parallel to 5x +4y -20=0.

Find an increasing A.P in which the sum of the first 3 terms is 27 and the sum of their squares is 275?

n n+1 are in power .

sin10sin30sin50sin70=1/16. Prove