Question

∠1 ​ and ∠2 are complementary.

Answer 1

Since complementary angles add to 90° we can write the equation:
x+3x+30=90

The solve for x

4x+30=90 (combine like terms)
4x=60 (subtract 30 from both sides)
x=15 (divide both sides by 4)

Hope this helps!

Answer 2

Answer:

The value of x is $15\°$

Step-by-step explanation:

we know that

If two angles are complementary, then its sum is equal to $90\°$

In this problem we have that

$m$ ------> equation A

we have

$m$

$m$

Substitute the values of m<1 and m<2 in the equation A and solve for x

$x\°+(3x+30)\°=90\°$

$4x=90\°-30\°$

$4x=60\°$

$x=60\°/4=15\°$