Math, asked by anumanikandan, 1 year ago

1 + tan squared theta by 1 + sec theta is equal to sec theta prove it

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Answered by manthan7445
88
hey mate! got ur answer hope it helps!!!
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anumanikandan: tq...bro helped me a lot
manthan7445: ur welcome
Answered by harendrachoubay
54

1+\frac{\tan^{2} \theta}{1+\sec \theta}=sec \theta, proved.

Step-by-step explanation:

L.H.S. =1+\frac{\tan^{2} \theta}{1+\sec \theta}

=\frac{1+\sec \theta +\tan^{2} \theta}{1+\sec \theta}

=\frac{(1 +\tan^{2} \theta) +\sec \theta}{1+\sec \theta}

=\frac{\sec^{2} \theta +\sec \theta}{1+\sec \theta}

Using trigonometric identity,

1 +\tan^{2} \theta=\sec^{2} \theta

=\frac{\sec \theta(1+\sec \theta)}{1+\sec \theta}

=sec \theta

=R.H.S., proved.

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