Question

if sinA + sin²A=1 then cos²A + cos⁴A = ?​

Answer 1

Step-by-step explanation:

As we know cos²A+sin²A=1

⇒cos²A=1-sin²A---------(1)

according to the problem,

sinA+sin²A=1

⇒sinA=1-sin²A--------(2)

therefore: sinA = cos²A

cos²A+cos⁴A = sinA+sin²A = 1

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Answer 2

Answer:

Hey mate here is ur answer

Step-by-step explanation:

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