Select the segment which has a grammatical error .

Since the  Praveen failed to pay his rent on time the owner denied him access to the premise.

If cos θ + sec θ = √5, then the value of cos³ θ+ sec³ θ is:

If 0 ≤ θ ≤ 90°, and sin(2 θ +50°) = cos (4 θ + 16°), then what is the value of θ (in degrees)?

If 1 + sin 2θ = p² and sin³ θ + cos³ θ = q then Which of the following is true ? 

The value of (3tan10°-tan³10°)/(1-3tan²10°) is equal to

The maximum value of 15 sin² θ + 8 cos² θ is

If sin 28° = 15/17 , then tan 62° = ?

The Value of (sin38˚)/(cos52˚)+ (cos12˚)/(sin78˚)- 4cos²60˚ is