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- Concept2:58Rationalizing Denominators0. Review of College Algebra / Rationalizing Denominators
- Practice problem
Rationalize the denominator.
0. Review of College Algebra / Rationalizing Denominators - Practice problem
Rationalize the denominator.
0. Review of College Algebra / Rationalizing Denominators
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- RN@RobertUpdate 3 weeks ago
Hi there! Please revisit this video - https://www.pearson.com/channels/trigonometry/asset/19697bd0/trig-values-in-quadrants-ii-iii-and-iv
Cos is positive in QI and QIV.
-pi/4 = -45 degrees, meaning the angle is in QIV, hence positive x value.
0up votes•0replies - MD@MD_2863782Update 4 weeks ago
How do we know that the x value for -pi/4 is a positive? The cosine on the circle is only positive and negative on the top half of the circle, I guess I am confused at to which -pi/4 we are using here.
0up votes•1replies - SO@SO_3203571Update 1 month ago
hey what about the 5/3 infront of the CIS ?
0up votes•1replies