Prove that : sec^2theta(1-sin^2theta/sin^2A) =1- tan^2 theta/ tan^2A || Trigonometry proof opt maths

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Prove that : sec^2theta(1-sin^2theta/sin^2A) =1- tan^2 theta/ tan^2A || Trigonometry proof opt maths, trigonometric proof questions
#trigonometry #bs_academy_nepal

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