Question

find all the three angles of the triangle ABC
angle a=x+35 angle b=2x-5and exterior angle=4x-15

Answer 1

Answer:

∠ A=60°,∠ B=75°, ∠ C=45°

Step-by-step explanation:

The exterior angle  as shown in the figure

exterior angle=a+b

So x+35+2x-5=4x-15

3x+30=4x-15

x=30+15=45°

∠ A=x+35=25+35=60°

∠B=2x-5=2*45-15=75°

∠C=180-(∠A+∠B)

=180-(60+75)=45°

Answer 2

Answer:

A. = 60°

B = 75°

C = 45°

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