ECAT Mathematics MCQ's Test For Full Book With Answers

ECAT Mathematics MCQ's Test For Full Book

Sr. # Questions Answers Choice
1 Name the property used in a (b-c) = ab - ac commutative property of multiplication distributive property of multiplication associative property of multiplication multiplicative inverse
2 Name the property used in 1000 x 1 = 1000 additive inverse multiplicative inverse additive identity multiplicative identity
3 By expressing cos 113° in terms of trigonometrical ratios, answer will be <span style="font-size: 0.95em;">− cos 76° = -0.7093</span> <span style="font-size: 0.95em;">− cos 65° = -0.4258</span> <span style="font-size: 0.95em;">− cos 67° = -0.3907</span> <span style="font-size: 0.95em;">− cos 62° = -0.8520</span>
4 By expressing sin 125° in terms of trigonometrical ratios, answer will be <span style="font-size: 0.95em;">sin 65° = 0.9128</span> <span style="font-size: 0.95em;">sin 55° = 0.8192</span> <span style="font-size: 0.95em;">sin 70° = 0.5384</span> <span style="font-size: 0.95em;">sin 72° = 0.1982</span>
5 Sine rule for a triangle states that <span style="font-size: 0.95em;">a/sin A = b/sin B = c/sin C</span> <span style="font-size: 0.95em;">sin A/a = sin B/b = sin C/c</span> <span style="font-size: 0.95em;">a/sin A + b/sin B + c/sin C</span> <span style="font-size: 0.95em;">2a/sin A = 2b/sin B = 2c/sin C</span>
6 Considering Cosine Rule of any triangle ABC, possible measures of angle A includes <span style="font-size: 0.95em;">Angle A is obtuse</span> <span style="font-size: 0.95em;">Angle A is acute</span> <span style="font-size: 0.95em;">Angle A is right-angle</span> <span style="font-size: 0.95em;">All of above</span>
7 In a triangle ABC, if angle A = 72° , angle B = 48° and c = 9 cm then Ĉ is <span style="font-size: 0.95em;">69°</span> <span style="font-size: 0.95em;">66°</span> 60° <span style="font-size: 0.95em;">63°</span>
8 For Cosine Rule of any triangle ABC, b2is equal to <span style="font-size: 0.95em;">a</span><sup>2</sup><span style="font-size: 0.95em;"></span><span style="font-size: 0.95em;">- c</span><sup>2</sup><span style="font-size: 0.95em;"></span><span style="font-size: 0.95em;">+ 2ab cos A</span> <span style="font-size: 0.95em;">a</span><sup>3</sup><span style="font-size: 0.95em;"></span><span style="font-size: 0.95em;">+ c</span><sup>3</sup><span style="font-size: 0.95em;"></span><span style="font-size: 0.95em;">- 3ab cos A</span> <span style="font-size: 0.95em;">a</span><sup>2</sup><span style="font-size: 0.95em;"></span><span style="font-size: 0.95em;">+ c</span><sup>2</sup><span style="font-size: 0.95em;"></span><span style="font-size: 0.95em;">- 2ac cos B</span> <span style="font-size: 0.95em;">a</span><sup>2</sup><span style="font-size: 0.95em;"></span><span style="font-size: 0.95em;">- c</span><sup>2</sup><span style="font-size: 0.95em;"></span><span style="font-size: 0.95em;">4bc cos A</span>
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