MCQ TRIGONOMETRY 1. If cos A = 4/5, then the value of tan A is (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 + sin2A = 1, then the value of the expression (cos2A + cos4A) 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° 2 0 2 0 2 0 2 11. The value of the expression [sin 22 sin 68 /cos 22 cos 680 + sin 2 630 cos 630sin 270] 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 (sin4q + cos4qθ) 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° For more Downloads logon: www.homestudyportal.com (99 88 156 156)