Trigonometric Ratios Questions

If A = cos2θ + sin4θ, then for all value of θ-

If cosec A + cot A = , then tan A is -

cos 52o + cos 68o + cos 172o =

The value of the expression (√3 sin 75o − cos 75o) is -

The value of sin 10o + sin 20o + sin 30o + ... + sin 360o is equal to -

If (Sec A − Tan A) (Sec B − Tan B) (Sec C – Tan C) = (Sec A + Tan A) (Sec B + Tan B) (Sec C + Tan C), then every side is equal to -

The value of is equal to-

The numerical value of tan + 2tan + 4tan + 8tan is equal to-...

No. of solution in the equation x = 4 sinx when x ∈ [0, 2π]-

If tan α = and sin β = , where 0 < α, β < , then 2β is equal to-...

If triangle ABC, ∠C = , then the value of cos2A + cos2B – cos A . cos B is equal to-...

is equal to-

The sign of the product sin 2 sin 3 sin 5 is -

is equal to -

Exact value of tan 200o (cot 10o − tan 10o) is-

If x + = 2 cos θ, then x3 +=...

If sin A, cos A and tan A are in G.P., then cos3A + cos2A is equal to-

If sin θ1 + sin θ2 + sin θ3 = 3, then cos θ1 + cos θ2 + cos θ3 =

If tan and tan are the roots of the equation 8x2 − 26x + 15 = 0 then cos (α + β) is equal to-...

The value of cos + cos + cos + cos + cos + cos + cos is...