is equal to

An angle α is divided into two parts so that the ratio of the tangents of these parts is λ. If the difference between these parts is x then sinx/sinα is equal to

 or equal to

Given θ Ïµ (0,π/4) and t₁ = (tan θ)^tanθ t₂ = (tan θ)^cotθ, t₃ = (cot θ)^tanθand t₄ = (cot θ)^cotθ then

If x = sin α, y = sin β, z = sin (α + β) then cos (α + β) =

The radius of the circle

If tan x + tan (x + π/3) + tan (x + 2π/3) = 3, then

The equation cos 2x + a sin x = 2a – 7 possesses a solution if

sin 47⁰ + sin 61⁰ – sin 11⁰ – sin 25⁰ is equal to

If 3π/4 < α < π, then  is equal to