How you prove that sin(90+30)=cos30?

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May 27, 2020

CRITICAL THINKING ABOUT THE BIBLE

January 5, 2021

Published by admin on September 15, 2020

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You need the identity
##sin(a+b)=sin(a)cos(b)+cos(a)sin(b)##
Just plugging in the numbers
##sin(90+30)=sin(90)cos(30)+cos(90)sin(30)=cos(30)##
Since ##sin(90)=1## and ##cos(90)=0##

How you prove that sin(90+30)=cos30?

Hello world!

CRITICAL THINKING ABOUT THE BIBLE

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