How do you rewrite #sin40cos15-cos40sin15# as a function of a single angle and then evaluate?
1 Answer
Oct 2, 2016
Please read the following:
Explanation:
If you're interested in finding out why, you can watch this clip:
Now, this means that:
You can evaluate sin(30) by drawing a diagram as such:
![https://useruploads.socratic.org/5eLIcgERQ3qlwAdbw6dE_socratic_answer_3.jpg)
And you will discover that: