If sin6 θ + cos6 θ + k cos2 2θ = 1, then k is equal to:
Which of the following is rational number
In ΔABC, the line joining the circumcentre to the incentre is parallel to BC, then cos B + cos C is equal to
Find the radian measure corresponding to – 370 30’.
The minute hand of a clock is 10 cm long. How far does the tip of the hand move in 20 minutes?
Find the minimum and maximum values of sin2 θ + cos2 θ