Verify the Pythagorean Identity Math symbols Relations Geome
Verify the Pythagorean Identity Math symbols Relations Geometry Groups Trigonometry Statistics 19 of 25 Answered
Solution
We have given 1+cot2(theta)=csc2(theta)
take LHS=1+cot2(theta)
substitute cot(theta)=cos(theta)/sin(theta)
1+cot2(theta)=1+cos2(theta)/sin2(theta)
=[sin2(theta)+cos2(theta)]/sin2(theta)
plug sin2(theta)+cos2(theta)=1 and 1/sin2(theta)=csc2(theta)
=1/sin2(theta)
=csc2(theta)
=RHS
Therefore, the given identity is proved
