Sine and cosine without cmath #c++

Question

Can someone explain me how to get sine and cosine without using cmath after getting an angle ? Helpp me if can , thank you

Answer 1

You can use Taylor series expansion for these trigonometric functions. Calculate the value upto certain terms of the series to get a good approximation for the value at that angle.
for ex, if you want the value of sine at an angle x, use sin(x) = x - x^3/3! + x^5/5! - x^7/7!...... series. you can search for these power series online if you don't remember.