In the triangle ABC angle A + angle B = 108 degree angle B + angle C = 130 degree find all the three angles ?Fast pleaseI have my exam tommorow.
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Answered by
215
A+B=108-----(1)
B+C=130------(2)
add (1) and
(2)
A+B+B+C=108+130
A+B+C+B=238
180+B=238 [since A+B+C=180]
B =238-180
B=58
substitute B =58 in (1) u will get A and
in(2) get C
A=50
C=72
B=58
B+C=130------(2)
add (1) and
(2)
A+B+B+C=108+130
A+B+C+B=238
180+B=238 [since A+B+C=180]
B =238-180
B=58
substitute B =58 in (1) u will get A and
in(2) get C
A=50
C=72
B=58
Answered by
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