FSC Part 1 Math Online Test-Chapter 10 Trigonometric Identities Sum and Difference of Angles

11th Class FSC Mathematics Chapter 10 Test Online

Sr. #	Questions	Answers Choice
1	sin5Θ + sin3Θ is equal to:	2cos 2Θ sin Θ -2 cos 4Θ sin Θ -2 sin 4Θ cos Θ 2 sin 4Θ cos Θ
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6	2 sin 12° sin 46° =	cos 34° + cos 58° sin 34° - sin 58° sin 34° + sin 58° cos 34° - cos 58°
7	2 cos α cos ß =	sin (α + ß) - sin (α - ß) cos (α + ß) - cos (α - ß) cos (α + ß) + cos (α - ß) sin (α + ß) + sin (α - ß)
8	-2 sin α sin ß =	sin (α + ß) + sin (α - ß) cos (α + ß) + cos (α - ß) cos (α + ß) - cos (α - ß) cos (α - ß) + cos (α - ß)
9	2 cos α sin ß =	cos (α + ß) + cos (α - ß) sin (α + ß) + sin (α - ß) sin (α + ß) - sin (α - ß) <div>cos (α + ß) + cos (α - ß)</div>
10	2 sin α cos ß =	sin (α + ß) - sin (α - ß) cos (α + ß) + cos (α - ß) sin (α + ß) + sin (α - ß) cos (α + ß) - cos (α - ß)
11		1 + cos Θ 1 - cos Θ
12	If sin α = cos ß in any triangle ABC then:	α + ß = 90° α + ß = 180° α + ß = 360° α + ß
13	Cot1°, Cot2°, Cot3°, .......... Cot89° =	-1 1 ∞ none
14	tan (270° + Θ) is equal:	cot Θ tan Θ -cot Θ -tan Θ
15	If an angle α is allied to an angle ß, then α ± ß = __________:	90° multiple of 90° 180° multiple of 180°
16	tan (-135°) =	0 1 √2
17	sec (2π + Θ), where Θ is a basic angle will have terminal side in:	quad. I quad. II quad. III quad. IV
18	csc (2π - Θ), where Θ is a basic angle, will have terminal side in:	quad. I quad. II quad. III quad. IV
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