If ∠A and ∠B are complementary then ∠A + ∠B = _____

If tan θ = find the value of sin θ.

If tan θ cos 60° = then the value of sin(θ - 15°) is _____.

If sin (θ + 30°) = cos 15°, then find the value of cos 2θ.

If tan 2A = cot(A – 30°), then find the value of sec(A + 20°)

If 0° < θ < 90° then sin θ < sin²θ

Find x, if sin x = cos (x – 20°)

If sin 17° = then show that sec 17° - sin 73° =

If r cosθ = 2√3 and r sinθ = 2, then find the value of r and θ when 0° < θ < 90°.

State True/False: “The equal chords of a circle are at equal distances from the centre of the circle.”

Write a difference between the geometric angle and trigonometrical angle.

Find the value of angle in degree made by the tangent of a circle with the radius of that circle at the point of contact