sec^2thita-1/tan^2 thita
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Answer:sec^2 A-1/tan^ A
=sec^2 A-(sec^2 A-tan^2 A)/tan^2 A
=sec^2 A-(sec^2 A/tan^2 A -
tan^2 A/tan^2 A)
=sec^2 A-(cosec^2 A-1)
=sec^2 A-cot^2A
Step-by-step explanation:
hellosam:
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