Question

if (a-27) and (2a+15) are compleymantry, then find a​

Answer 1

Answer:

a-27+2a+15=90

-a-12=90

-a= 90+12

-a = 102

a=-102

Answer 2

Answer:

$(a - 27) + (2a + 15) = 90 \\ \\ = > a - 27 + 2a + 15 =9 0 \\ \\ = > 3a - 12 = 90 \\ \\ = > 3a = 90 + 12 \\ \\ = > 3a = 102 \\ \\ = > a = \frac{102}{3} \\ \\ = > a = 34$

We know complementary angles = 90 degree.

So using that we get ' a ' as 34 .

hope it helps uH ✔