Solution of Triangles MCQs

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1. Law of sines is:





2. In a triangle ABC ∠A = 70°, ∠B = 60°, then ∠C is:





3. When angle of elevation is viewed by an observer, the object is:





4. If b = 2, A = 30°, B = 45°, then a is equal to:





5. If a = 2, b = 2, A = 30°, then B is:





6. If in a triangle ABC, the sides b, c and angle A are given, then side a is:





7. In a triangle ABC, the law of cosine is:





8. If in a triangle ABC, b = 2, c = 2, A = 60°, then side a is:





9. If in a triangle ABC, a = 1, b = 2, C = 60°, then side c is:





10. If in a triangle ABC, b = 2, c = 3, a = 1, then cosA is:





11. If in a triangle ABC, a = 3, b = 4, c = 2, then cosC is:





12. If b sinC = c sinB, then a sinB is equal to:





13. In a right triangle if one angle is 30°, then the other will be:





14. In a right triangle if one angle is 45°, then the other will be:





15. If B = 90°, b = 2, A = 30°, then side a is:





16. If C = 90°, a = 1, c = 2, then angle A is:





17. If C = 90°, b = 1, c = 2, then side a is:





18. If C = 90°, b = 1, c = 2, then angle A is:





19. The distance of a man from the foot of a 100m tower, if angle of elevation is 30°, is:





20. A pilot at a height of 50m measures angle of depression of a tower 30°, distance from tower is:





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