Mathematics
In the adjoining figure, ABC is right-angled triangle at B and ABD is right angled triangle at A. If BD ⊥ AC and BC = 2√3 cm, find the length of AD.
Related Questions
Without using trigonometrical tables, evaluate the following :
5 sin 50° sec 40°- 3 cos 59° cosec 31°
When 0° < A < 90°, solve the following equations :
(i) sin 3A = cos 2A
(ii) tan 5A = cot A
Find the value of θ if
(i) sin (θ + 36°) = cos θ, where θ and θ + 36° are acute angles.
(ii) sec 4θ = cosec (θ - 20°), where 4θ and θ - 20° are acute angles.