tan 1˚ × tan 2˚× …………………….tan 88˚ × tan 89˚ = ?

If (tan 8θ · tan 2θ = 1), then find the value of (tan 10θ).

if 8 sin ² x + 3 cos ² x = 4  then find tan x

If  tan 12θ x tan 6θ = 1 then the value of tan 9θ is

If cosec (2A + B) = (2/√3) and cosec (A + B) = √2, then determine the value of (4A - B).

If cosec (2A + B) = 1 and cosec (A + B) = (2/√3), find the value of (4A – B).

cot 4˚ x cot 47˚ x cot 42.3˚ x cot 43˚ x cot 47.7˚ x cot 86˚= ?

If sin5A = cos(2A+20°), then what is the value of A? Given that 5A is an acute angle.

What is the value of [(sin x + sin y) (sin x – sin y)]/[(cosx + cosy) (cosy – cosx)]?

If cos θ + sec θ = √2, then the value of cos³ θ+ sec³ θ is: