Question

sec(-945)-এর মান কত?

please explain
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Answer 1

Answer:

$\sqrt{2}$

Step-by-step explanation:

sec(-945) [$\sec( - \alpha ) = - \sec( \alpha )$]

= -sec(945)

= -sec(3×360-135) [$\sec( 360 - \alpha ) = \sec( \alpha )$]

= -sec(135) [$\sec(135) = - \sqrt{2}$]

= -(-√2)

= √2