Math, asked by ramprasadsingh03132, 1 year ago

I- Sant
It Seca
it seca
-tand
+ ton A
cosA​

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Answers

Answered by spiderman2019
1

Answer:

Step-by-step explanation:

Sec²A - Tan²A+ SecA - TanA / 1 + SecA + TanA

= (SecA - TanA)(SecA + TanA) + (SecA - TanA) / 1 + SecA + TanA

= (SecA - TanA)(1 + SecA + TanA)/1 + SecA + TanA

= SecA - TanA

= 1 - SinA / CosA

= R.H.S

Hence proved.

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