Math, asked by dhiru278, 7 months ago

8. In a AABC, if ZA - ZB = 42°
and 2B - C = 21°, then 2B = ?

Answers

Answered by is06s

0

Answer:

2 × angle B = 117°

Step-by-step explanation:

A + B + C= 180° (i)...

from the question we obtain ...

21 + 2B=C

42+B=A

putting the new values of A and C in (i)...

21+2B+42-B+B=180

63+2B=180

2B=117°

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