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What is 3a*3a*3a*3a ? It says write it in exponential form but I'm having trouble trying to do that .
1 answer:
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Actually Welcome to the Concept of the Angle sum property of a triangle :
here, addition of all angles of triangles should be 180° , and hence,
6x = 120°
===> x = 20°
hence, option B.) is correct.
B.) (x+5) °+(3x) °+(2x+55) °=180° ; x=20°
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Answer:
- ∠BCA = 30°
- ∠FHC = 125°
- ∠A = 45°
- ∠GBC = 75°
- arc EBC = 260°
Step-by-step explanation:
Angle BCA intercepts arc FB, so is half its measure: 60°/2 = 30°.
Angle FHC is half the sum of the angles intercepted by its chords: (60°+150°+40°)/2 = 125°.
Angle A is half the difference of the arcs it intersects: (150° -60°)/2 = 45°.
Angle GBC is half the measure of the arc it intercepts: 150°/2 = 75°.
arc EBC is the sum of arcs EF, FB, and BC: 50° +60° +150° = 260°.
