Chapter 4 Summary

Chapter 4 is composed of 11 sections. All of them are very challenging concepts to be absorbed. We learned the trig identities of sine, cosine, and tangent; the trig graph; verifying trig identities; inverse trig functions; harmonic motion. Among these various lesson, I think I am pretty confident on 4.8: Inverse Trigonometric Functions. From researching the definition, I found out that In mathmatic, the inverse trigonometric functions (occasionally called cyclometric functions) are the inverse functions of the trigonometric functions (with suitably restricted domains). For example, a question is asked to find the inverse function of sine that's equal to 1/2. The answer would be pi/6. We could answer this in a complete sentence "the angle whose sine is 1/2 is pi/6". The algebraic abbreviation for that sentence is arcsine=pi/6.