Question

if tan⁴A + tan²A = 1, then find cos⁴A + cos²A.​

Answer 1

Answer:

Given tan A+cot A=2

Squaring on both sides we get,

tan

2

A+cot

2

A+2tanAcotA=4

tan

2

A+cot

2

A+2=4

tan

2

A+cot

2

A=2

Step-by-step explanation:

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