(A) 3/5 (B)3/4 (C)4/3 (D)5/3

2. If sin A = 1/2 , then the value of cot A is

(A) 3 (B) 1/3 (C) 3/2 (D) 1

3. The value of the expression [cosec (75° + q) – sec (15° – q – tan (55° + q+ cot (35° – q)] is

(A) – 1 (B) 0 (C) 1 (D) 3/2

4. Given that sinq= a/b , then cosq is equal to

5. If cos (a + b) = 0, then sin (a - b) can be reduced to

(A) cos b (B) cos 2b (C) sin α (D) sin 2a

6. The value of (tan1° tan 2° tan3° ... tan 89°) is

(A) 0 (B) 1 (C) 2 (D)1 / 2

7. If cos 9a= sinα and 9a < 90°, then the value of tan5a is

(A) 1/√3 (B) √ 3 (C) 1 (D) 0

8. If DABC is right angled at C, then the value of cos (A+B) is

(A) 0 (B) 1 (C) 1/2 (D)√3/2

9. If sinA + sin

^{2}A = 1, then the value of the expression (cos

^{2}A + cos

^{4}A) is

(A) 1 (B) 1/2 (C) 2 (D) 3

10. Given that sina= 1/2 and cosb =1/2 , then the value of (a + b) is

(A) 0° (B) 30° (C) 60° (D) 90°

11. The value of the expression [sin

^{2}22

^{0}sin

^{2}68

^{0 }/ cos

^{2}22

^{0}cos

^{2}68

^{0 }+ sin

^{2 }63

^{0}cos

^{ }63

^{0}sin 27

^{0 }] is

(A) 3 (B) 2 (C) 1 (D) 0

12. If 4 tanq = 3, then [4sinq - cosq ] / [4sinq + cos q ] is equal to

(A) 2/3 (B) 1/3 (C) 1/2 (D) 3/4

13. If sinq – cosq = 0, then the value of (sin

^{4}q + cos

^{4}qθ) is

(A) 1 (B) 3/4 (C) 1/2 (D) 1/4

14. sin (45° + q) – cos (45° – q) is equal to

(A) 2cosq (B) 0 (C) 2 sin q (D) 1

15. A pole 6 m high casts a shadow 2 √3m long on the ground, then the Sun’s elevation is

(A\) 60° (B) 45° (C) 30° (D) 90°

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