Trigonometry Question and Answers Practice Question and Answer
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Q: If tan A=n tan B and Sin A= m Sin B, then the value of Cos2A is
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5f4df246081699374e855fcf- 1$$ {m^{2}+1\over {n^{2}+1}}$$false
- 2$$ {m^{2}+1\over {n^{2}-1}}$$false
- 3$$ {m^{2}-1\over {n^{2}-1}}$$true
- 4$$ {m^{2}-1\over {n^{2}+1}}$$false
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Answer : 3. "$$ {m^{2}-1\over {n^{2}-1}}$$"
Q: The value of sec4 A (1 – sin4A) – 2tan2A is:
875 05dd38322874d2d52fa317fac
5dd38322874d2d52fa317fac- 1$$ {1\over 2} $$false
- 20false
- 32false
- 41true
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Answer : 4. "1"
Q: If $$ {1+sinθ\over {1-sinθ}}={p^{2}\over{q^{2}}}$$, then sec θ is equal to:
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5f40dfa24c9a9415f7cdfc3b- 1$$ {2p^{2}{q^{2}}\over {p^{2}+{q^{2}}}}$$false
- 2$${1\over 2}\left({q\over p}+{p\over q} \right)$$true
- 3$$ {1\over {p^{2}}}+{1\over {q^{2}}}$$false
- 4$$ {p^{2}q^{2}}\over{p^{2}+q^{2}}$$false
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Answer : 2. "$${1\over 2}\left({q\over p}+{p\over q} \right)$$"
Q: $$ {tan^2θ}$$ is equal to:-
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5efeb11c7228dd6b06e74e29- 1$$ {1\over cot^2{θ}}$$true
- 2$$ {1\over sin^2{θ}}$$false
- 3$$ {1\over cosec^2{θ}}$$false
- 4$$ {1\over sec^2{θ}}$$false
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Answer : 1. "$$ {1\over cot^2{θ}}$$"
Q: If $$ secθ-tanθ={1\over\sqrt{3}}$$, the value of secθ.tanθ=?
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5dccdc38e9d33d6509c0ab1a- 1$$ {4\over\sqrt{3}}$$false
- 2$$ {2\over\sqrt{3}}$$false
- 3$$ {2\over3}$$true
- 4$$ {1\over\sqrt{3}}$$false
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Answer : 3. "$$ {2\over3}$$ "
Q: If 3 + cos2θ= 3(cot2θ + Sin2θ), 0°<θ<90°, then what is the value of (cosθ +2sinθ)?
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5fbf73c64f2f6c622be747fa- 1$$ {2\sqrt{3}+1\over {2}}$$true
- 2$$ {3\sqrt{2}}$$false
- 3$$ {3\sqrt{3}+1\over {2}}$$false
- 4$$ {\sqrt{3}+2\over 2}$$false
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Answer : 1. "$$ {2\sqrt{3}+1\over {2}}$$"
Q: If $$ secθ+tanθ=2+\sqrt{5}$$, then the value of $$ sinθ+cosθ$$ is:
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5f058db23f7f070477919df3- 1$$ 3\over{\sqrt{5}}$$true
- 2$$ {\sqrt{5}}$$false
- 3$$ 7\over{\sqrt{5}}$$false
- 4$$ 1\over{\sqrt{5}}$$false
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Answer : 1. "$$ 3\over{\sqrt{5}}$$"
Q: The value of $$ cos {20^o} cos {40^o}cos {60^o}cos {80^o}$$ is:
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5e81724bd063766356920d18- 1$$ {1\over 15}$$false
- 2$$ {1\over 16}$$true
- 3$$ {1\over 12}$$false
- 4None of thesefalse
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Answer : 2. "$$ {1\over 16}$$"
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