Adv
deepaksoni
  • 0
Guru

Ques 15 (b) In the figure (i) given below, AC is a diameter of the given circle and ∠BCD = 75°. Calculate the size of (i) ∠ABC (ii) ∠EAF.

  • 0

This is the basic and conceptual question from Chapter name- circles
Topic – Angle properties of circles
Chapter number- 15

In this ques , AC is a diameter of the given circle and ∠BCD = 75°. And we have to Calculate the size of (i) ∠ABC (ii) ∠EAF.

ICSE Avichal publication
Understanding ICSE Mathematics
Question 2(b)

Share

1 Answer

  1. (b) (i) AC is the diameter of the circle

    ∠ABC = 90(Angle in a semi-circle)

    (ii) ABCD is a cyclic quadrilateral

    ∠BAD + ∠BCD = 180o

    ∠BAD + 75= 180o

    (∠BCD = 75o)

    ∠BAD = 180-75o = 105o

    But ∠EAF = ∠BAD

    (Vertically opposite angles)

    ∠EAF = 105o

    • 0
Leave an answer

Leave an answer

Browse

Choose from here the video type.

Put Video ID here: https://www.youtube.com/watch?v=sdUUx5FdySs Ex: "sdUUx5FdySs".

Captcha Click on image to update the captcha.

Related Questions