Prove that tanθ+secθ−1/​tanθ−secθ+1 =1+sinθ/cosθ=cosθ/1-sinθ

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Prove that tanθ+secθ−1/​tanθ−secθ+1 =1+sinθ/cosθ=cosθ/1-sinθ
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His teachings is so good and clear y he has. That less subscribers and likes

sukha
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Sir hme kese pta chlega ki 1 ki jgh par ye formula use krna he 😓
Kya ye question learn krna pdega 🥺
Kya koi trika he jisse hm pta lga payen ki is trh ke question me 1 ki jgh formula kb use krna he

kumkumixd