Question

How does 2∠1 = 180° - ∠B become ∠1 = 90° - 1/2∠B (pls explain with steps)

Answer 1

Answer:

divide both side by 2 you will get your result

Answer 2

2∠1 = 180° - ∠B

Dividing both sides by 2

(2∠1 )/ 2 = (180° - ∠B)/2

∠1 = (180°) / 2 - (∠B) /2

∠1 = 90° - 2∠B

Hope it helps

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