निर्देश :

Find the maximum value of 18 sin A + 7 cos A.

If θ is an acute angle and sin θ + cosec θ = 2, then the value of ^sin2 θ + cosec² θ is:

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

If (sin A + cos A) = √3 cos (90° - A), then find the value of cot A.

If 30sin⁴theta; + 45 cos⁴theta; = 18 . Then find the value of 216 cosec⁶theta; + 64 sec⁶

sin² 4˚ + sin² 6˚ + sin² 8˚ + sin² 10˚ + ……… + sin² 86˚ =?

What is the simplified value of the given expression?

2(sin² 15° + sin² 75°) + 4sin 30° - (2sec 60° + cot 45°)

If sin(x-y) = 1  and cos(x+y) = 1 /√2  then what is measure of angle x.