In the given figure, AB is a diameter of the circle wuth centre O. DO

1.	In the given figure, AB is a diameter of the circle wuth centre O. DO is parallel to CB and angle DCB = 120°. Calculate :i) angle DAB ii) angle DBA iii) angle DBCiv) angle ADCAlso prove that triangle AOD ia an equilateral triangle.
Answer» Answer: i)angle DAB=60degree ii)angleDBA=30degree ii)angleDBC=30degree iii)angleADC=120degree angle AOD =180-angleDOB 180-120=60degree---(i) angleODA=angleADB-angleBDO 90degree-30degree 60degree-------(ii) angleDAO==angleODA-----(opp. angle of opposite sides) -------(iii) from(i),(ii),(iii)TRIANGLE AOD IS EQUILATERAL TRIANGLE HOPE YOU SATISFIED MARK AS BRAINLIST FOLLOW FOR MORE SOLUTIONS

In the given figure, AB is a diameter of the circle wuth centre O. DO is parallel to CB and angle DCB = 120°. Calculate :i) angle DAB ii) angle DBA iii) angle DBCiv) angle ADCAlso prove that triangle AOD ia an equilateral triangle.

Answer»

Answer:

i)angle DAB=60degree

ii)angleDBA=30degree

ii)angleDBC=30degree

iii)angleADC=120degree

angle AOD =180-angleDOB

180-120=60degree---(i)

angleODA=angleADB-angleBDO

90degree-30degree

60degree-------(ii)

angleDAO==angleODA-----(opp. angle of opposite sides) -------(iii)

from(i),(ii),(iii)TRIANGLE AOD IS EQUILATERAL TRIANGLE

HOPE YOU SATISFIED

MARK AS BRAINLIST

FOLLOW FOR MORE SOLUTIONS

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In the given figure, AB is a diameter of the circle wuth centre O. DO is parallel to CB and angle DCB = 120°. Calculate :i) angle DAB ii) angle DBA iii) angle DBCiv) angle ADCAlso prove that triangle AOD ia an equilateral triangle.​

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In the given figure, AB is a diameter of the circle wuth centre O. DO is parallel to CB and angle DCB = 120°. Calculate :i) angle DAB ii) angle DBA iii) angle DBCiv) angle ADCAlso prove that triangle AOD ia an equilateral triangle.