Asked by sh

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
Answered by Reiny
you are asked to verify a specific case, so use your calculator

my calculator gave me .999999999
Answered by sh
how do I plug in cos^2?
its always cos(
do I put cos(^2)(2.4)?
Answered by drwls
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.
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