Assertion :1−sin2800 .sec800 =-1 Reason : x2=−x if x<o

1−sin2800.sec800=cos800.sec800=1 x2=|x|=−x if x<0.

Assertion :1−sin2800 .sec800 =-1 Reason : x2=−x if x<o

1−sin2800.sec800=cos800.sec800=1 x2=|x|=−x if x<0.

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Assertion : $\sqrt{1 - \sin^{2} 80^{0}}$ . $\sec 80^{0}$ =-1
Reason : $\sqrt{x^{2}} = - x i f x < o$

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A is false , R is true

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A is true , R is true and R is correct explanation of A

A is true, R is false.

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$\sqrt{1 - \sin^{2} 80^{0}} . \sec 80^{0} = \cos 80^{0} . \sec 80^{0} = 1$

$\sqrt{x^{2}} = | x | = - x$ if $x < 0.$

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Assertion :1−sin2800 .sec800 =-1 Reason : x2=−x if x<o

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Assertion : $\sqrt{1 - \sin^{2} 80^{0}}$ . $\sec 80^{0}$ =-1
Reason : $\sqrt{x^{2}} = - x i f x < o$