verify each identity for the given angle measure.

Mathematics
Tutor: None Selected Time limit: 1 Day

1+cot^2(30')=csc^2(30')

' =degree symbol

Apr 28th, 2015

Cot^2(30) = 1/tan^2(30)=1/(sin(30)/cos(30))^2=1/[(1/2)/(sqrt(3)/2)]^2=1/(1/3)=3

csc^2(30)=1/sin^2(30)=1/(1/2)^2=1/(1/4)=4

and surely 1+3=4 QED

Apr 28th, 2015

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