If sin A + Sin² A =1, then Cos² A + Cos⁴A=?
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Answered by
3
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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Answered by
2
Answer:
cos^2A+cos^4A=1
Step-by-step explanation:
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