How do you evaluate the sine, cosine, and tangent of the angle 53 degrees without using a calculator?
1 Answer
Jul 10, 2015
I would try using a thing called expansion in series:
Explanation:
Basically the value of your trigonometric function is found simply adding terms that are easy to manipulate (each term is a fraction involving your angle in radians that is "easy" to evaluate).
You first need to consider your angle in radians:
Than you use these expansions for
Using them you get:
Hope it helps!