Question

tan^2 + cos^2 =1 plz solve it with the explanation
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Answer 1

Answer:

tan2A +cos2A=1

Step-by-step explanation:

taking lhs

1+sec2A+cos2A

1+1/cos2A+cos2A

{1+cos2A+cos4A}/cos2A

sin2A+sin2A+1+cos2A/co2A

2 cos2A-cos2A/cos2A

co2A/cos2A

1=1

lhs=rhs

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