cosec^257^ - ^233^ =? - Vidyadip

MCQ

$\text{cosec}^257^\circ-\tan^233^\circ=?$

A
$0$
✓
$1$
C
$-1$
D
$2$

✓

Answer

Correct option: B.

$1$

$\text{cosec}^257^\circ-\tan^233^\circ$
$=\text{cosec}^2(90^\circ-33^\circ)-\tan^233^\circ$
$=\sec^230^\circ-\tan^233^\circ$
$=1$

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