Question

prove that sec²A-tan²A=1 by geometrical method​

Answer 1

Answer:

Here is ur ans mate

Step-by-step explanation:

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Answer 2

Answer:

To prove-: sec^2A-tan^2A=1

Solution-: 1/cos^2 - sin^2A/cos^2A=1

(secA=1/cosA and tan A =sinA/cosA)

1-sin^2A/cos^2A=1

cos^2A/cos^2A=1

1=1

LHS= RHS

Hence, sec^2A-tan^2A=1

Step-by-step explanation: