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Question

The expression 1+tan2θ1+secθ when simplified reduces to

A
sinθ
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B
secθ
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C
cosecθ
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D
cotθ
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Solution

The correct option is A secθ
1+tan2θ1+secθ
= 1+sec2θ11+secθ (Since, sec2θtan2θ=1)

= 1+(secθ1)(secθ+1)1+secθ

= 1+secθ1
= secθ

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