Question

Choose the correct alternative : 2. find the value of x. (a) 20 (b) 25 (c) 40 (d) 100​

Answer 1

Answer:

100

Step-by-step explanation:

all the other would be partial

be hydrated

Answer 2

Given: The figure.

To find: The value of x.

Solution: The value of x is 40°.

Let the three vertices of the triangle be A, B and C. At B, an angle of 100 degrees is subtended externally. The external and the internal angles would form a sum of 180 degrees. This is because the two angles would form a straight line.

$100 + \angle B = 180$

$\angle = 80$

The angle A is equal to x. Now, the sum of the three angles 80, 60 and x would be equal to 180 as the sum of the angles of a triangle always measures 180 degrees.

$\angle A + \angle B + \angle C = 180$

$x+80+60 = 180$

$x= 40$

Therefore, the value of x is 40°.

Although a figure of your question is missing, you might be referring to the one attached.