1.

Show that 1- tan A/1+tanA= 2 cos A-1.​

Answer»

ANSWER:

MATHS

Prove that

secA+tanA

1

cosA

1

=

cosA

1

secA−tanA

1

DECEMBER 20, 2019avatar

Rubee Dayal

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ANSWER

According to QUESTION,

secA+tanA

1

cosA

1

=

cosA

1

secA−tanA

1

secA+tanA

1

+

secA−tanA

1

=2secA

Solving LHS,



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