3) In given figure AC perpendicular on BD find value of x.
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Answer:
In∆abc, angle b+ angle a=90
angle b=50
In∆ deb angle b + angle deb+ angle x=180
50+100+angle x =180
angle x =180-50-100=30 Ans
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SOLUTION :-
In ∆ABC,
angle ( A + B + ACB ) = 180° (Angle sum property of a triangle)
40° + B + 90° = 180°
B + 130° = 180°
B = 180° - 130°
B = 50°
In ∆BDE,
angle ( B + BED + D ) = 180° (Angle sum property of ∆)
50° + 100° + x = 180°
150° + x = 180°
x = 180°-150°
x = 30°
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