Integral of Cosine to the Fourth | All The Steps To Integrate Cos^4

Evaluate the integral of cosine to the fourth using a power reduction formula. I take you through all the steps to integrate cos^4 by first reducing it to cos^2 then to cos using the power reduction trig identity. This is a great technique for evaluating the integral of sine or cosine to an even power.

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⏰ *Time Stamps*
0:00 Integral of cos^4 as (cos^2)^2
0:34 Apply Power Reduction Formula to cos^2
2:29 Apply Power Recuction Formula Again to Integrate cos^2
5:15 Evaluate Final Integral for cos^4

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