(1+cot2theta)tantheta/sec2theta=cot2theta
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Proof :
L.H.S. =
Hence, proved.
• Trigonometry : It is the study of angles and its sine, cosine, tangent, cosectant, sectant, cotangent ratios.
• Identity Rules :
>> sinθ * cosecθ = 1
>> cosθ * secθ = 1
>> tanθ * cotθ = 1
>> sin²θ + cos²θ = 1
>> sec²θ - tan²θ = 1
>> cosec²θ - cot²θ = 1
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