Math, asked by gagana74, 1 year ago

prove that (1-sinA) (tanA+secA)=cosA

Answers

Answered by Anonymous
2
LHS= (1-sinA) (tanA+secA)
=(1-sinA)(sinA/cosA +1/cosA)
=(1-sinA) (sinA+1/cosA)
=(1+sinA)(1-sinA)/cosA
=1-sin^2 A/cos A
=cos^2A/cos A
=cosA=RHS

PROVED

HOPE IT HELPS

#Nandani
Answered by GRajeev
2
use trigonometric identities
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