Answer:
2csc^2(Θ) - 1
Explanation:
The given is:
(1 + cos^2(Θ)) / sin^2(Θ)
Now,
sin^2 (Θ) + cos^2(Θ) = 1
This means that:
cos^2(Θ) = 1 - sin^2 (Θ) ...........> I
Substitute with I in the given equation, this will lead to:
(1+1-sin^2 (Θ) ) / sin^2(Θ)
(2-sin^2 (Θ) ) / sin^2(Θ)
This expression can be written as:
[2/sin^2(Θ)] - [sin^2 (Θ) / sin^2(Θ)]
This is equivalent to:
2csc^2(Θ) - 1
Hope this helps :)
