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21 questions · self-marked practice — reveal the answer and mark yourself.

Question 31 Mark
If $\operatorname{cosec} \theta=2 x$ and $\cot \theta=\frac{2}{x}$, find the value of $2\left(x^2-\frac{1}{x^2}\right)$.
Answer
$\frac{1}{2}$
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Question 41 Mark
If $5 x=\sec \theta$ and $\frac{5}{x}=\tan \theta$, find the value of $5\left(x^2-\frac{1}{x^2}\right)$.
Answer
$\frac{1}{5}$
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Question 81 Mark
If $\sin ^2 \theta \cos ^2 \theta\left(1+\tan ^2 \theta\right)\left(1+\cot ^2 \theta\right)=\lambda$, then find the value of $\lambda$.
Answer
1
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Question 91 Mark
If $\operatorname{cosec} \theta-\cot \theta=\alpha$, write the value of $\operatorname{cosec} \theta+\cot \theta$.
Answer
$\frac{1}{\alpha}$
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Question 101 Mark
If $\sec \theta+\tan \theta=x$, write the value of $\sec \theta-\tan \theta$ in terms of $x$.
Answer
$\frac{1}{x}$
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Question 121 Mark
What is the value of $\frac{\tan ^2 \theta-\sec ^2 \theta}{\cot ^2 \theta-\operatorname{cosec}^2 \theta}$?
Answer
1
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Question 181 Mark
If $\operatorname{cosec}^2 \theta(1+\cos \theta)(1-\cos \theta)=\lambda$, then find the value of $\lambda$.
Answer
1
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