verify the pythagorean identity numerically, for the value:

Question

verify the pythagorean identity numerically, for the value:
2.4

cos^2 2.4 + sin^2 2.4 = 1
is this is a special angle? :S

thanks in advance

Reiny · Answer

you are asked to verify a specific case, so use your calculator my calculator gave me .999999999

sh · Answer

how do I plug in cos^2? its always cos( do I put cos(^2)(2.4)?

drwls · Answer

Enter 2.4, press cos, and then press x^2. Then do it again for sin and add. I'm using an HP calculator. Your procedure many be different. The sum should be 1, whether the 2.4 is in radians or regrees.