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- #1

So I know two angles then, 90 degrees and 1/8 pi.

I also know the hypotenuse has a length 5 units.

I am required to find the angle remaining in radians.

The problem I have is that although I can do conversions on the calculator they are always decimal notation, so radians of the form pi / 6 as example cannot be completed.

So really my question becomes;

if I have 1/8 pi = 39

^{0 }and I know the other angle is 90

^{0 }, how do I convert 89

^{0 }to radians?

pi / 180 x 89 = 1.55 radians, but this is not in the correct format like,

pi/2 which would represent 90

^{0 }

Could somebody please advise how I change decimal notation over to this format please.

Kind regards

Casio