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What is the measure of ∠B?
Triangle A B C with ray A G through point C and angle measures A = 3x, B = 4x, and exterior angle B C G = 10x minus 45.




60∘60 degrees

15∘15 degrees

45∘45 degrees

105∘

What Is The Measure Of B Triangle A B C With Ray A G Through Point C And Angle Measures A 3x B 4x And Exterior Angle B C G 10x Minus 45 6060 Degrees 1515 Degree class=

Sagot :

msm555

Answer:

Solution given:

4x+3x=10x-45[exterior angle is equal to the sum of two opposite interior angle]

45=10x-7x

x=45/3

x=15

now.

<B=4x=4×15=60° is your answer