evaluate arc sin 1/2?

Answer 1

Basically arc sin is just the inverse sin. So in your calc press the sin^-1 button with the 1/2. Should get 30 degrees. This is basically a 30-60-90 triangle with the Y value as 1 and hyp of 2.

Answer 2

When you see arc sin remember:

arc sin means, "an angle whose sine is ---" in your case, "an angle whose sine is 1/2" and we know that sine of 30° is 1/2.

Therefore, arc sin 1/2 = 30°
.

Answer 3

i will make the thought which you're taking a trig. direction. think of of it this way , for some perspective theta, sin (theta)=a million There are some particular angles and there trig values you merely ought to devote to memory. In degree's those are 0, 40 5, ninety, one hundred eighty, 270, 360 In radians, 0 Pi/4, Pi/3, Pi/2, Pi, so on etc. those ought to be indexed on your text textile. For ninety ranges or Pi/2 you ought to understand that sin=a million additionally cos(0)=a million, cos (one hundred eighty)=-a million cos(ninety)=cos(270)=0 So sin^-a million(a million) ability for what perspective theta does the sin=a million, ninety ranges. additionally Arc cos(theta)= cos^-a million(theta) cos^-a million(0) ability for what perspective theta is the cos equivalent to 0. (theta=ninety) you ought to devote those particular angles and there values of sin, cos , and tan to memory!! this ought to be sufficient to get you all started. undergo in innovations that the inverse trig purposes have constrained domain names, and you ought to devote those to memory additionally. stable success cos (ninety)=0