In this video, we provide essential "math help" by addressing "common mistakes in maths" students make with "trigonometry", specifically focusing on "cofunction identities". This "math tutorial" ...

Note: This only works when \(x\) is measured in radians. We are now going to look at more complex trigonometric functions where we will use the general rule: \(\int {\cos (ax + b)dx = \frac{1}{a}} ...