then tan x, tan y, tan z are in.
are in A.P. whose common difference is α, then the value of
f x1 and x2 are two distinct roots of the equation a cos x + b sin x = c is equal to
then sin 4y is equal to
then the value of sin x is
If θ1 and θ2 are two values lying in [0,2π] for which tan θ = λ, then