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ECAT → Engineering Colleges Admission Test (ECAT) Practice Test Questions from 26 to 30
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26. If the sides of a triangle are 3, 4 and 5 meter. What is the area of the triangle?
(A) 6 m2
(B) 8 m2
(C) 10 m2
(D) 12 m2
27. tan–1x+cot–1x = ?
(A) 0°
(B) 45°
(C) 90°
(D) 180°
28. sin[cos–1 (1/2)] = ?
(A) 0
(B)
(C)
(D) 1
29. What is the distance between points (1,0,3) and (4,–6,–2) in space?
(A)
(B) 65
(C)
(D) 70
30. cos(–780o) = ?
(A) 0
(B) 1/2
(C)
(D) 1
ANSWERS: ECAT PRACTICE TEST
26. A
27. C
28. C
29. C
30. B