NCERT Class 11-Math's: Chapter –3 Trigonometric Functions Part 17

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Question 48:

The value of is

(A)

(B)

(C)

(D)

Answer: (C)

Question 49:

The value of is equal to

(A)

(B)

(C)

(D)

Answer: (B)

Question 50:

If , then the value of sin 2θ is equal to

(A)

(B)

(C)

(D)

Answer: (C)

Question 51:

If then the value of is

(A)

(B)

(C)

(D) Not defined

Answer: (B)

Question 52:

If lies in third quadrant then the value of is

(A)

(B)

(C)

(D)

Answer: (C)

Question 53:

Number of solutions of the equation lying in the interval is

(A)

(B)

(C)

(D)

Answer: (C)

Question 54:

The value of is given by

(A)

(B)

(C)

(D)

Answer: (A)

Question 55:

If A lies in the second quadrant and , then the value of is equal to

(A)

(B)

(C)

(D)

Answer: (B)

Question 56:

The value of is

(A)

(B)

(C)

(D)

Answer: (A)