Construct a segment of a circle on the chord of length 6cm containing an angle 30 degrees.
Answers
Step-by-step explanation:
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Solution:
Method (1)
Since:
The perpendicular bisector of any chord to circle always passes through the center of the circle and also bisect the chord.
SO
1) .Draw the perpendicular bisector on chord .
2). Using compass bisect the angle 90° in to two equation angles of 45°
3) Extend the line which bisecting the 90° angle to form line whose two point lies on boundary of circle.The constructed line is line segment making an angle of 45° with chord.
Hence we done.
Method (2)
Since:
1) Chord has the length 6 cm .
2) Using compass bisect the chord into two part.The one part of chord must have length 3 cm because half of 6 cm is 3 cm
since the segment should make the angle 45°
3) let construct the right angle triangle ΔABC
such that A be midpoint of chord ,B be right end point of chord on boundary of circle and line AB making angle 45° with the line AB.
4) let BC = x
Then to find x .
Tan (Ф) = mBC / mAB = x / 3 .
(3)* Tan (45) = x
⇒ x = 3 cm.
SO using compass draw a line BC of length 3 cm and draw the line AC .
5) Extend the line AC so that its end point cut the circle boundary.
The final line in the line segment containing angle 45°.