Answer:
B
Step-by-step explanation
the answer comes to and 15 is the only answer below 20
Consider the equation below. x2 − y2 + z2 − 6x − 2y − 2z + 9 = 0 Reduce the equation to one of the standard forms. Classify the
surface. ellipsoid hyperboloid of one sheet circular cone elliptic paraboloid hyperboloid of two sheets hyperbolic paraboloid elliptic cylinder parabolic cylinder Sketch the surface.
1 answer:
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Answer:
option D is true.
Step-by-step explanation:
The right-angled triangle is shown.
From the right-angled triangle,
The angle Ф = 60°
We know that the trigonometric ratio
tan Ф = opposite / adjacent
- opposite = 4
- adjacent = n
Thus,
tan 60 = 4 / n
√3 = 4/n
n = 4/√3
Thus,
n = 4/√3
= (4 × √3) / (√3 × √3)
= 4√3 / 3
Thus,
n = 4√3 / 3
Using Pythagorean theorem
m = √n²+4²
Thus,
- n = 4√3 / 3
Therefore, option D is true.