Х = 3y — 1 3х – бу = 12
2 answers:
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Answer:
Step-by-step explanation:
Step 1:
Calculate the circumference of both circles.
The formula of a circumference:of a circle with radius r:
The circle R:
The circle S:
The length of the intercepted arc for circle R is
Step 2:
Calculate what the part of the circumference of the circle R is the intercepted arc:
The same length of the circumference of the circle S is searched for the length of the intercepted arc for circle S.
Step 3:
Calculate the length of the intercepted arc for circle S:
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°