can someone explain the answer step by step of (ii) and (iii).
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SEE BELOW
Step-by-step explanation:
(ii) angle EAD + angle DAC + angle CAB = 180
(angles on straight line)
=(3x-5) + (x+20) + (65) = 180°
=3x-5+x+20+65 = 180
=3x+x+20+65-5 = 180
=4x+85-5 = 180
=4x+80 = 180
=4x = 180-80
=4x = 100
=x = 100/4
= x = 25
(iii) same as (ii) but we have to take all angles
= x+2x+2x+60 = 180
= 5x+60 = 180
= 5x = 180-60
= 5x = 120
= x = 120/5
= x = 24
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