Question

निम्न में से कौन सी रेखा y-अक्ष के समानंतर है ।

$1) \: x + y = 3 \\ 2) \: 3x - y = 2 \\3) 4x - 3 = x + 1 \\ 4)x + 2 = y$
THE ANSWER IS 3RD I KNOW BUT IT COME .

HOW THE ANSWER COME TELL FAST.​

Answer 1

Answer:

Sin Cos Tan Formula

Sine θ = Opposite side/Hypotenuse = BC/AC. Cos θ = Adjacent side/Hypotenuse = AB/AC. Tan θ = Opposite side/Adjacent side = BC/AB.

Answer 2

Answer:

ANSWER

The given circle is x

2

+y

2

−2x−4y−20=0 has its centre

−2g=−2 or g=1

−2f=−4 or f=2$

Thus, the centre is at C(1,2)

and radius=r=

g

2

+f

2

−c

=

1

2

+2

2

−(−20)

=5units

We have O

1

=(1,2) and Let O

2

=(α,β) be the centres A(5,5) is the mid-point of O

1

O

2

∴

2

1+α

=5,

2

2+β

=5

On simplifying ,we get

α=9,β=8

The circle is (x−9)

2

+(y−8)

2

=5

2

or x

2

+y

2

−18x−16y+120=0

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