Mathematics
JAMB 1984
A right circular cone has a base radius r cm and a vertical angle 2y
o. The height of the cone is
-
A.
r tan yo cm
-
B.
r sin yo cm
-
C.
r cot yo cm
-
D.
r cos yo cm
-
E.
r cosec yo cm
Correct Answer: Option C
Explanation
\(\frac{r}{h}\) = tan yo
h = \(\frac{r}{tan y^o}\)
= r cot yo
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