## Integration of Powers and Products of Sine and Cosine

Integration of Powers and Products of Sine and Cosine
• Currently 4.0/5 Stars.
17066 views, 8 ratings - 00:18:15
Taught by Houston

### Meets NCTM Standards:

Integral of (cos x)^m (sin x)^n dx. Also, integral of cos(ax) sin(bx) dx, etc.
• What is the integral of (sin x)^m (cos x)^n?
• How do you find the integral of (cos x)^2 (sin x)^3?
• What is the integral of (cos x)^3 / sin x?
• What are the power reduction formulas?
• What is the integral of (sin x)^2?
• What are reduction formulas for integrals of powers of sin and cos?
• How do you find integrals of products of sin and cos factors with different periods?
• What are product-to-sum formulas?
This video explains how to integrate power of sin and cos multiplied together, such as (cos x)^3. These techniques use u-substitution and using the fact that (sin x)^2 + (cos x)^2 = 1. In some problems, it is necessary to use double angle formulas to simplify and integrate. Some good examples are done in this video and many different techniques are explained. Finally, the entire lesson is summed up at the end of the video.
• Currently 4.0/5 Stars.
Reviewed by MathVids Staff on December 20, 2008.
I found this video extremely helpful. My math teacher did not explain integrating sine and cosine to powers very well at all! This video taught me everything I needed to know in a clear, concise manner with detailed examples at a slow enough pace that I was still able to follow and understand.
• Currently 5.0/5 Stars.
Reviewed by honu07 on February 16, 2009.
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• Currently 5.0/5 Stars.
Reviewed by batskab on June 24, 2009.
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Reviewed by njnj1990 on October 30, 2009.
I really like it!..good job.
• Currently 5.0/5 Stars.
Reviewed by lyn on September 18, 2010.  