Question

$se{c}^{-1}\left[sec\right(-{30}^{\circ }\left)\right]=$
[MP PET 1992]

• A. $-{60}^{\circ }$
• B. $-{30}^{\circ }$
• C. ${30}^{\circ }$
• D. ${150}^{\circ }$

Answer 1

The correct option is C

${30}^{\circ }$

$se{c}^{-1}\left[sec\right(-{30}^{\circ }\left)\right]=se{c}^{-1}\left(sec{30}^{\circ }\right)={30}^{\circ }$