Math, asked by selmerafonso, 1 month ago

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 ​

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Answers

Answered by yukti637
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.

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