2.) fill in the blank.
csc^2 0 = cot ^2 0 +
a.) sec ^2 0
b.) -cos ^2 0
c.) -tan ^2 0
d.) 0
e.) 1

E.) 1

Step-by-step explanation:

Firstly we will solve for L.H.S.

L.H.S. =

Since we know that is the inverse of .

So we can say that;

Now For R.H.S.

Since we  can rewrite as .

Now we can say that the R.H.S. is;

Now we add the fraction and get;

Now according to trigonometric identity;

So,

Here,

  and     =  

L.H.S. = R.H.S.

Hence

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step-by-step explanation: