ANSWER

EXPLANATION
The given problem is

This is defined if and only if

Even the given expression can be simplified to obtain:

The exclusion is

Answer:
to get ur answer take 11 from 14
Step-by-step explanation:
just beacuse it is inbetween 10-20 jhahahhahaha
Answer:
B. Obtuse triangle
Step-by-step explanation:
The following triangle is an obtuse triangle.

As we know that cotx= 1/tanx
cot36° = 1/tan36°
=>cot36°= 1/0.726543
=>so cot 36°= 1.376382
So correct answer is option D.
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