Question

Sin o+ sin2o=1 show that cos2o+ cos4o=1

Answer 1

$sin0 + {sin}^{2} 0 = 1 \\ \sqrt{1 - {cos}^{2} } + 1 - {cos}^{2} 0 = 1 \\ \sqrt{1 - {cos}^{2}0 } = {cos}^{2} 0 \\ 1 - {cos}^{2}0 = cos0 \\ cos0 + {cos}^{2}0 = 1$

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Answer 2

Step-by-step explanation: