I don't understand this answer. Pls help

1.	I don't understand this answer. Pls help
Answer» Step-by-step explanation: *complementary* ANGLES are those , whose sum is <=90° in the question it is given that (a+15)° and 2a° are complementary therefore (a+15)° + 2a° =90 ° a+2a+15=90° 3a° =90-15 3a°=75 a° = 25 Now, SINCE** a=25 so (a+15) = 25+15 = 30° 2a = 2x 25 = 50°

Answer»

Step-by-step explanation:

complementary ANGLES are those , whose sum is <=90°

in the question it is given that (a+15)° and 2a° are complementary

therefore

(a+15)° + 2a° =90 °

a+2a+15=90°

3a° =90-15

3a°=75

a° = 25

Now,

SINCE a=25 so (a+15) = 25+15 = 30°

2a = 2x 25 = 50°

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