Math, asked by jasssingh0109, 2 months ago

Prove that (Sec A+ tan A)(1-sinA)= cos A

Answers

Answered by latheefafrida

1

Step-by-step explanation:

=(1/cosA+sinA/cosA)(1-sinA)

=(1+sinA/cosA)(1-sinA)

=(1+sinA)(1-sinA)/cosA

=(1-sin²A)/cosA

=cos²A/cosA

= cosA

Hence,the result is cos A

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