Trigonometry Practice Question and Answer
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Q: Find the value of sin2 10 + sin2 20 + sin2 30 + ....... + sin2 80.
5358 05ef04c2881a47f2e7ae44392
5ef04c2881a47f2e7ae44392- 13false
- 24true
- 30false
- 41false
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Answer : 2. "4"
Q: If $$ {2sinθ-cosθ\over cosθ+sinθ}=1 $$ then the value of Cotθ is
1131 05eec947d13d72d584fb8c8c7
5eec947d13d72d584fb8c8c7- 1$$ {1\over4}$$false
- 2$$ {1\over2}$$true
- 3$$ {1\over3}$$false
- 4$$ {2\over3}$$false
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Answer : 2. "$$ {1\over2}$$"
Q: If 2sin2θ–5sinθcosθ+7cos2θ=1then possible values of tan θ are
1582 05ee9ae66bc81cb2528ec1c58
5ee9ae66bc81cb2528ec1c58- 12, 5false
- 21, 3false
- 32, $$ {5\over2}$$false
- 42, 3true
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Answer : 4. "2, 3"
Q: If 3 tan θ - 4 = 0 and 180° < θ < 270° then cosec θ = _______
921 05ee1cd838c4c964f73dd6a82
5ee1cd838c4c964f73dd6a82- 1$$- {5\over4}$$true
- 2$$ {4\over5}$$false
- 3$$ -{4\over5}$$false
- 4$$-{5\over4}$$false
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Answer : 1. "$$- {5\over4}$$"
Q: If tanθ=1/5 then the value of Cosec2θ=?
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5edf1d8e71a5bd73c30de4ba- 15false
- 2$$ \sqrt{5}$$false
- 3$$ \sqrt{6}$$false
- 46true
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Answer : 4. "6"
Q: If cos3A = X, then value of X?
1124 05ecf38f579d67a247e48737f
5ecf38f579d67a247e48737f- 14cos3A + 3cosAfalse
- 23cosA – 4cos3Afalse
- 3cosA + 4cos3Afalse
- 44cos3A – 3cosAtrue
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Answer : 4. "4cos3A – 3cosA"
Q: (secA – 1)/(secA + 1) is equal to?
913 05ecf342aa7365b2f4ce1cfb0
5ecf342aa7365b2f4ce1cfb0- 1(1 – sinA)/(1 + sinA)false
- 2(1 – cosA)/(1 + cosA)true
- 3(1 + cosA)/(1 – cosA)false
- 4(1 + sinA)/(1 – sinA)false
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Answer : 2. "(1 – cosA)/(1 + cosA)"
Q: If x tan45° cos30° = sin30° cos45°, then x is equal to -
1155 05ebb7011c1aae5429b38e67a
5ebb7011c1aae5429b38e67a- 1$${1\over\sqrt { 3} \ } $$false
- 2$${1\over\sqrt { 6} \ } $$true
- 3$${1\over\sqrt { 2} \ } $$false
- 4$${2\over\sqrt { 3} \ } $$false
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Answer : 2. "$${1\over\sqrt { 6} \ } $$"
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