Definition Of Arcsine

Arcsine is the inverse function of sine. It is also written as arcsin or sin^-1. If y = sin x, then x = arcsin y.

Examples of Arcsine

or 
This means that the angle 30⁰ has sine equal to .

Video Examples: Arcsine

Solved Example on Arcsine

Ques: arcsin(0.1218) = ?

Choices:

A. 12⁰ 
B. 83⁰ 
C. 78⁰
D. 7⁰
Correct Answer: D

Solution:

Step 1: arcsin(0.1218) = 7⁰, rounded to the nearest degree. [Use calculator in degree mode.] 

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