Trigonometrical functions not return expected Value

[danipoplpl (dani)]

Hello dear DevForum community,

I have encountered a very strange bug lately. The problem is that a simple

math.asin()

function doesn’t return the expected value.
For example, calculating the arc sine of 1 in studio gives for me 1.57… which is completely wrong, correct answer would be 90, try on a calculator yourself.

I fear that this is a studio bug, so I would be really glad if someone could test it out this simple line of code in studio and tell me what output you get.

print(math.asin(1))

[wafflechad]

Roblox, and most software internally, use radians for storing angle data in memory. As it turns out 1.57 radians (pi / 2) is 90 degrees. If you would like to display the calculated angle in degrees you can use math library functions to convert:

print(math.deg(math.asin(1)))

which is doing something similar to

print(180 / math.pi * math.asin(1))