Which of the following option is incorrect about the

If cosec²A = (sin60^o + tan45^o X sec²45^o), then find the value of sin²A.

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

What is the simplified value of the given expression?

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

If cos 2x = 1/2, then the value of x:

If √3 tan 2θ – 3 = 0, then find the value of tanθ secθ – cosθ where 0 < θ < 90°

If 7sin²θ + 3cos²θ = 4, then find the value of θ?

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

sin² 9 ° + sin² 10 ° + sin² 11 ° + sin² 12 ° + ……… + sin² 81 ° = ?

If tanθ + secθ = 5, find the value of sinθ.