SOLVE FOR x IN THE DIAGRAM BELOW

x = 12

Step-by-step explanation:

(x + 42) + 3x = 90

Simplify.

4x + 42 = 90

Subtract.

4x = 48

Divide.

x = 12

good luck, i hope this helps :)

x= 12°

Step-by-step explanation:

Information needed:

The two angles add up to 90°

Equation: (x+42)+3x= 90°

Solve:

(x+42)+3x= 90°

x+42+3x= 90°

x+3x+42= 90°

4x+42= 90°

    -42  -42

4x= 48°

/4    /4

x= 12°

the answer is b.

step-by-step explanation:

by the trigonometric ratio tangent, tangent equals opposite divided by adjacent.

therefore, tan(50) equals ac/3

multiply each side by 3 to get: ac=3tan(50)

the answer is b.