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1. A
   $1$
2. B
   $\sqrt{2}$
3. C
   $\sqrt{3}$
4. D
   $2$

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1. A
   I only
2. B
   II only
3. C
   Both I and II
4. D
   Neither I nor II

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1. A
   $60°$
2. B
   $105°$
3. C
   $120°$
4. D
   $150°$

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1. A
   $\frac{15\sqrt{3}}{4}$ square cm
2. B
   $\frac{15\sqrt{3}}{2}$ square cm
3. C
   $15\sqrt{3}$ square cm
4. D
   $30\sqrt{3}$ square cm

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1. A
   $\frac{\sqrt{3}-\sqrt{3}}{2}a$
2. B
   $\frac{\sqrt{3}+\sqrt{3}}{2}a$
3. C
   $\frac{\sqrt{3}-\sqrt{3}}{4}a$
4. D
   $\frac{\sqrt{3}+3}{4}a$

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1. A
   $\frac{\sqrt{3}+\sqrt{3}}{2}b$
2. B
   $\frac{\sqrt{3}-\sqrt{3}}{2}b$
3. C
   $\frac{\sqrt{3}-\sqrt{3}}{4}b$
4. D
   $\frac{\sqrt{3}+3}{4}b$

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1. A
   $-\tan\alpha\cdot\tan 2\alpha$
2. B
   $-\cot\alpha\cdot\cot 2\alpha$
3. C
   $\tan\alpha\cdot\tan 2\alpha$
4. D
   $\cot\alpha\cdot\cot 2\alpha$

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1. A
   $\sec 4\alpha$
2. B
   $\csc 4\alpha$
3. C
   $2\sec 4\alpha$
4. D
   $2\csc 4\alpha$

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1. A
   $\frac{pq}{p+q}$
2. B
   $\frac{p+2q}{p}$
3. C
   $\frac{p}{p+2q}$
4. D
   $\frac{p}{2p+q}$

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1. A
   $\frac{1}{2}$
2. B
   $1$
3. C
   $\frac{3}{4}$
4. D
   $2$

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1. A
   $\frac{11}{10}$
2. B
   $\frac{11}{5}$
3. C
   $\frac{12}{5}$
4. D
   $\frac{13}{5}$

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1. A
   $15°$
2. B
   $30°$
3. C
   $45°$
4. D
   $75°$

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1. A
   I only
2. B
   II and III only
3. C
   I and III only
4. D
   I, II and III

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