Question

Two angles measures a-60° and 123°-2a. If each one is opposite to equal sides of an isosceles triangle.find A

Answer 1

Hi ....dear..
.here is your answer..
..we know that angles opposite to equal sides of an isosceles triangle are equal......
so ...
a-60 = 123-2a.
a+2a=123+60
3a= 183
a= 183/3
a= 61...

hence a equal to 61.....
hope it helped you!!
Regards Brainly Star Community.
#shubhendu

Answer 2

Answer:

The value of a is 61

Step-by-step explanation:

Given : Two angles measures a-60° and 123°-2a.

To Find : If each one is opposite to equal sides of an isosceles triangle.find a

Solution:

The opposite angle of equal sides are equal .

So, $a-60=123-2a$

$3a = 183$

$a = 61$

Hence the value of a is 61