Question

List-I	List-II
$1){\tan }^2\theta =1$	a $)n\pi \pm \pi /6$
$2){\cos }^2\theta =\frac{1}{4}$	b $)n\pi \pm \pi /4$
$3){\sin }^2\theta =\frac{1}{4}$	c $)n\pi \pm \pi /3$
4) cosec $\theta =1$	d) $n\pi \pm \pi /2$ $e)n\pi \pm \pi /8$

• A. b,d,a,c
• B. c,a,e,b
• C. b,c,a,d
• D. d,a,b,c

Answer 1

The correct option is C b,c,a,d

$1]ta{n}^2\theta =1$ means $\theta =n\pi +\frac{\Pi }{4}$........$tan\frac{\pi }{4}=1$

$2]co{s}^2\theta =\frac{1}{4}$ means $cos\theta =\pm \frac{1}{2}$

means $\theta =n\pi \pm \frac{\pi }{3}$

$3]si{n}^2\theta =\frac{1}{4}$ means $sin\theta =\pm \frac{1}{2}$

means $\theta =n\pi \pm \frac{\pi }{6}$

$4]cose{c}^2\theta =1$ means $cosec\theta =\pm 1$

means $\theta =n\pi \pm \frac{\pi }{2}$