Please solve this question.
1 answer:
Answer:
An equilateral triangle is formed.
Step-by-step explanation:
Since you construct two lines of 60° at points P and Q, the two ends of the line, you construct a triangle with two angles as 60°.
Hence, with the knowledge that the angle sum of a triangle is 180°, we can find that the remaining angle is =
.
Therefore, a triangle with all angles at 60° is an equilateral triangle.
Hope this helped!
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Answer:
(a) σ² = 144
(b) s² = 12
Step-by-step explanation:
(a) Population variance σ² = ∑(X - )² / N
The arithmetic mean
σ² =
=
=
=
σ² = 144
(b)
= 12