Distance Calculus @ Roger Williams University is in full operation during COVID-19 Emergency

The Primitives of Precalculus
by Robert Curtis

Laws of Sines and Cosines - Law of Cosines

  • P9: Trigonometric Functions:
    • P9.7: Laws of Sines and Cosines:
      • P9.7.c: Law of Cosines:
        • P9.7.c.1: ChalkTalk Help Movie
        • P9.7.c.2: LiveMath Notebook
        • P9.7.c.3: LiveMath Help Movie
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Curriculum Home with Demo Access

Distance Calculus Courses
Math 213: Calculus I (4 credits)
Math 214: Calculus II (4 credits)
Math 351: Multivariable Calculus (4 credits)
(same as Calculus III, Calculus IV, Vector Calculus)
Math 317: Differential Equations (3 credits)
Math 331: Linear Algebra (3 credits)
Math 315: Probability Theory (3 credits)
Calculus-Based Statistics
Math 207: Applied Calculus (3 credits)
Survey of Calculus • Liberal Arts Calculus
< Engineering Calculus I
Math 136: Precalculus (4 credits)
Frequently Asked Questions
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Enroll Any Time &rarrow; Finish Fast
Asynchronous - No Meeting Times
Course Syllabi PDFs
How Long To Finish Course
Introductory Videos






Distance Calculus - Student Reviews

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Date Posted: Sep 20, 2020
Review by: Genevieve P.
Courses Completed: Applied Calculus
Review: I found out from my grad school after being accepted that I needed a Calculus course before starting their MBA program. I had less than 6 weeks to do it (and as a non-STEM undergrad no less). The video lectures were informative, the pre-calc refresher was great to get re-conditioned, and the asynchronous format worked so well as I did this at night/weekends after work. I completed it in 4 weeks. Professor Curtis was extremely responsive, graded assignments quickly, and a supportive guide providing constructive feedback to me to excel at the assignments. I highly recommend this course for those who need a pre-req in a hurry or like learning on their own schedule. Thanks, Distance Calculus and Professor Curtis!
Transferred Credits to: Massachusetts Institute of Technology (MIT)



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Date Posted: Dec 9, 2019
Review by: Louisa A.
Courses Completed: Calculus I
Review: My microeconomics class required college-level calculus as a prerequisite, and I didn't want to wait until next year to take the class. So, I took DC's Calculus I class over the summer, so I could register for econ when I got back to school this fall. I actually think I got more help taking the class online than I would have in the huge lecture classes here. Prof. Curtis was really clear in explaining concepts and talking me through the topics that I was having trouble with. It took me about 10 weeks to finish the class, which didn't seem too long and didn't feel rushed. My friends who are in calculus now, trying to finish the prereq, are pretty jealous!



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Date Posted: Apr 13, 2020
Review by: Jorgen M.
Courses Completed: Calculus I
Review: I really enjoyed this course, much more than I thought I would. I needed to finish this course very fast before starting my graduate degree program @ Kellogg. I was able to finish in 3 weeks. I liked the video lectures and the homework process. I highly recommend this course.
Transferred Credits to: Kellogg School of Business, Northwestern Univ