Mark the red letter shown in the brackets the subject of the formula

Solution in the attachment!

x = 11.4715

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Equality Properties

Trigonometry

[Right Triangles Only] SOHCAHTOA [Right Triangles Only] sinθ = opposite over hypotenuse

Step-by-step explanation:

Step 1: Define

Angle θ = 35°

Opposite Leg = x

Hypotenuse = 20

Step 2: Solve for x

Substitute [Sine]:                     sin35° = x/20Isolate x:                                  20sin35° = xRewrite:                                    x = 20sin35°Evaluate:                                  x = 11.4715