Math, asked by Henry141, 1 year ago

answer to be brainlist plz..it is urgent

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Answered by shpriyanshu

(4)..cosx/1-sinx + cosx/1+sinx

; cosx (1+sinx)+cosx (1-sinx)/1-sin^2x

; cosx+sinx+cosx-sinx/cos^2x

;2cosx/cosx×cosx

;2×1/cosx

;2secx=RHS

Answered by HarshTaya

please mark as branliest

(4)..cosx/1-sinx + cosx/1+sinx

; cosx (1+sinx)+cosx (1-sinx)/1-sin^2x

; cosx+sinx+cosx-sinx/cos^2x

;2cosx/cosx×cosx

;2×1/cosx

;2secx=RHS

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