Question

2. Find the measures of angles ZA = (2x + 3) and
ZB = (2x - 3), if their sum is 120°.​

Answer 1

Answer:

2x +3 + 2x - 3 = 120°

4x = 120°

x = 30°

So the required angles are

(2×30°+3°) = 63°

(2×30°- 3°) = 57°

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Answer 2

Answer:

given that ,

          ZA + ZB= 120°

      ⇒(2x+3) + ( 2x-3)= 120°

     ⇒4x=120°

     ⇒x=30°

∴ZA=2×30°+3    and ZB= 2×30°-3

      = 60+3                    = 60-3

      =63                          =57°

∴ZA=63° , ZB= 57°

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Step-by-step explanation: