b=2a + 15° and
c = 3a + 5°
find the values of b and c.
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Answered by
42
Answer:
b = 105° and c = 140°
Step-by-step explanation:
b = 2a + 15
c = 3a + 5
70+a+2a+15+3a+5 = 360°
[since the sum of the angles of quadrilateral is 360°]
=> 6a + 90 = 360°
=> 6a = 270°
=> a = 45°.
Substituting for b we get b = 2a + 15
b = 2 × 45 + 15 = 105°.
c = 3 × 45 +5 = 140°.
Therefore, b = 105° and c = 140°...
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0
Answer:
2akfiggskjygud
ytifr
ty8rdf
2a+15,, 3a+5=105, 140
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