Which of the following layers contains

Find the simplified value of:

If cos2B = sin(1.5B + 48^o), then find the measure of 'B'.

sin² 7 ° + sin² 8 ° + sin² 9 ° + sin² 10 ° + ……… + sin² 83 ° = ?

Solve the following trigonometric expression:

If cot8A = tan(A+8˚), find the value of A? Given that 8A and A+8 are acute angles.

In a right triangle ABC, angle B = 90°. If tan A = 3/4 and the length of the hypotenuse is 25 cm, find the area of the triangle.

If secθ + tanθ = 3+√10, then the value of sinθ+cosθ is