4) In the adjoining figure, A ABC is a right triangle in which zB = 90° and AB= AC. Line segment BC is produced on both sides as shown in the figure. Prove that:-प्रूफ दैट एंगल बीएसी प्लस 30 डिग्री इज इक्वल टू वन थर्ड ऑफ एंगल ए सी डी प्लस एंगल एबीसी
Attachments:
Answers
Answered by
1
Answer:
Draw a right angled △ABC using given instructions:
Here sin30=
AC
BC
2
1
=
20
BC
Or BC=10 cm
By Pythagoras theorem:
(AB)
2
=(AB)
2
−(BC)
2
=(20)
2
−(10)
2
=300
AB=10
3
cm.
Similar questions