Question

an angle is 21 degree more than twice its complement.find it

Answer 1

Frame an equation for it

Let the angle be x degrees

=x +(2x-21)

=3x-21°=90°

=3x=90°+21°

=3x=111

=>111/3

=37

VERIFICATION

x+(2x-21)

=37+{(37×2)-21}

=37+(74-21)

=37+53

=90

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