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zitlays
17.03.2020 •
Mathematics
A boy painted 3/4 of a wall using 1/7 of a can of paint.how many walls can he paint using one can of paint?
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Ответ:
A ≈ 40°
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtract Property of EqualityTrigonometry
[Right Triangles Only] SOHCAHTOA [Right Triangles Only] sinθ = opposite over hypotenuseStep-by-step explanation:
Step 1: Identify
Angle θ = A
Opposite Leg = 27
Hypotenuse = 42
Step 2: Solve for A
Substitute [sine]: sinA = 27/42Simplify: sinA = 9/14Trig inverse: A = sin⁻¹(9/14)Evaluate: A = 40.0052°Round: A ≈ 40°