R S Aggarwal and Veena Aggarwal Solutions for Exercise 4: MULTIPLE-CHOICE QUESTIONS (MCQ)

If $2x=\sec A$ and $\frac{2}{x}=\tan A$ then  $2(x^2-\frac{1}{x^2})=$?

If $\tan \theta =\frac{4}{3}$ then $(\sin \theta +\cos \theta )=$?

If $(\tan \theta +\cot \theta )=5$ then $({\tan }^2\theta +{\cot }^2\theta )=$?

If $(\cos \theta +\sec \theta )=\frac{5}{2}$ then $({\cos }^2\theta +{\sec }^2\theta )=$?

If $\tan \theta =\frac{1}{\sqrt{7}}$ then $\frac{(\cos e{c}^2\theta -{\sec }^2\theta )}{(\cos e{c}^2\theta +{\sec }^2\theta )}=$?

If $\tan \theta =\frac{a}{b}$ then $\frac{(\cos \theta +\sin \theta )}{(\cos \theta -\sin \theta )}=$?

${(\mathrm{cosec}\theta -\cot \theta )}^2=$?

$(\sec A+\tan A)(1-\sin A)=$