Question

Please give Statement & Reason​

Answer 1

Answer:

Answers are ,

Angle A = 100 degree

Angle B = 100 degree

Angle z = 25 degree

Angle x = 75 degree

Step-by-step explanation:

Explaination :

Given , AB || CD ( i )

Angle B = 180 - 80 ( Linear Pair )

= 100 degree

Angle A = 100 degree ( {i} )

Angle z = 180 - Angle A + 55 degree

= 180 - ( 100 +55 )

= 180 - 155 = 25 Degree

Angle x = 180 - 80 + z

= 180 - (80+25 )

= 180 -105 = 75 degree

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Answer 2

Answer:

Solution

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Correct option is A)

x

2

+y

2

=a

2

−(1)

Eq 1 is a circle with centre (0,0) and

radius a .

Equation of tangent to the circle is

y=mx±a

1+m

2

(2)

line which touches the circle is also the

tangent of the circle

y=3x+10 - (3)

Compare (2) and (3)

1

1

a

2

=

3

m

=

10

±a

1+m

2

m=310=±a

10

=10

a=

10

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