Someone plz solve this ... Prove that Under root (SecA-1)/(secA+1)=1-cosA/sinA
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secA-1/secA+1(whole root) + secA+1/secA-1(whole root)
take LCM and add both u get
(secA-1)(whole square)+(secA+1)(whole square)/ sec(square)A-1 (whole root)
when u take out the root u get
secA-1+secA+1/tanA
cancel 1 u get
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