Question

In the
given figure BD = DC and angle DBC=30 degree. Find the measure of angle BAC, if Ois centre of the
circle.
don't mind the accuracy of the diagram​

Answer 1

Answer:

if the speed of motor is 55 km per hour calculate its in metre second iska ans dijiye

Answer 2

Step-by-step explanation:

in triangle BDC

BD=CD

<BCD=<CBD

<BCD=30

<BCD+<CBD+<BDC=180°

30+30+<BDC=180°

60+<BDC=180°

<BDC=180°-60

+<BDC=120°

ABCD is a cyclic quadrilateral.

<BDC+<BAC=180°( in an cyclic quadrilateral the opposite sides are supplementary)

120+<BAC=180°

<BAC=180°-120

<BAC=60°