Clarifying default parameter angle mode for trig functions like sin() and cos()

[thrly]

Topic

Currently the parameter details for trig functions like sin(), cos(), asin() etc., say:

* @param {Number} angle the angle.

In the description for those functions, its noted that the function 'takes into account the current angleMode()'. They don't state the default expectation that it's radians. The reference for angleMode() does: 'Functions such as rotate() and sin() expect angles measured radians by default.'

It's okay as it is, but would it be clearer for each of the trig functions' parameters that say 'angle: the angle' to clarify that by default its expecting a radian value, without new users needing to check the default state of angleMode()?

Maybe something like:

angle the angle, in radians unless specified by angleMode().

I would be happy to work on this if it's an issue worth fixing.