In the given figure, ZDAC = 30°, ZCBD = 40°. ZADB = yº, and ZADB = 2º. Find the difference between angles yº and zº. Q. 30° 80° 60° 709
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Correct option is
A
1
In △ABC
tan60=
BC
AB
AB=
3
BC
Let BC=x, AB=
3
x
In △ABD,
tan30=
BD
AB
BD=AB
3
BC+CD=AB
3
x+40=x
3
(
3
)
x+40=3x
x=20
Thus, AB=20
3
=34.64 cm
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veeresh gouda
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