what is the angle subtended by the line joining points of A(3,6) and B(0.5) with the origin
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Answered by
1
Answer:
How many square tiles of side 9 cm will be needed to fit in a square floor of a bathroom of side 720cm ?find the cost of tilling at the rate of ₹7.50 per file
Give me formula also
Answered by
3
Answer:
Correct option is
C
2
π
Given 2 points are (5,2),(6,−15)
Slope of the line joining first point to the origin is m
1
=
5−0
2−0
=
5
2
Slope of the line joining second point to the origin is m
2
=
6−0
−15−0
=
2
−5
Let the angle subtended by these two points at (0,0) is θ
∴tanθ=
1+m
1
m
2
m
1
−m
2
=
1+(
5
2
×−
2
5
)
5
2
−(−
2
5
)
=
(0)
(
10
29
)
=∞
∴θ=tan
−1
∞=90
o
=
2
π
Hence, option C is correct.
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