Question
 Lethal dose require to reduce the population by half
of test animals is known as?Solution
Lethal dose require to reduce the population by half of test animals is known as LD50.
The minimum value of 9 cos2 θ + 36 sec2 θ isÂ
If x = r sin A cos B, y = r sin A sin B and z = r cos A, then find x² + y² + z².
IfÂ
If sinθ = 5/13 for an acute angle θ, find:
(a) cosθ, (b) tan(90° − θ).
If sec 4A = cosec (3A - 50°), where 4A and 3A are acute angles, find the value of A + 75.
Find the maximum value of 18 sin A + 7 cos A.

If cot A = √3, then what will be the value of sin4 A?