Tan²theta- cot²theta=sec²theta(1-cot²theta)
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srry I didn't knew....
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Step-by-step explanation:
tan^2theta-cot^2theta=sec^2theta-sec^2thetacot^2theta
we know that sec^2theta-tan^2theta=1
sec^2thetacot^2theta-cot^2theta=sec^2theta-tan^2theta
cot^2theta(sec^2theta-1)=1
we know that cot^2theta×tan^2theta=1
cot^2theta tan^2theta-1=0
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