Question

If tana +cota =3 prove that tan^2a+cot^2a =7

prove it in detail ​

Answer 1

Answer:

Given tan A+cot A=2

Squaring on both sides we get,

tan2A+cot2A+2tanAcotA=4tan2A+cot2A+2=4tan2A+cot2A=2

Answer 2

Step-by-step explanation:

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