How do you find the intersections points of #y=-2cosx# and #y=3sin(3x)#?

1 Answer
SCooke
Feb 20, 2018

Generate graphs of the functions and find their points of intersection.

Explanation:

As this question is in the "Graphing Trigonometric Functions" section, I assume that the graphical solution is preferred over the numerical one of #-2cos(x) = 3sin(3x)#. You can expand a graph scale to find individual solution points. As both functions are continuous there are an infinite number of intersections.
enter image source here

Related questions
See all questions in General Sinusoidal Graphs
Impact of this question
2532 views around the world
You can reuse this answer
Creative Commons License