ACT Math Formulas

Area of Triangle

• 1/2 (b1 +b2)h

• bh

• 1/2 bh

• lwh

Tags

CCSS.6.G.A.1

Volume of cylinder

• 1/3 𝝅r²h

• 4/3𝝅r³h

• 𝝅r²h

• 𝝅r²

Tags

CCSS.HSG.GMD.A.3

CCSS.8.G.C.9

Pythagerean Theorem

• y=mx+b

• a²+b² = c²

• a+b=c

• a-b=c

Tags

CCSS.8.G.B.8

slope intercept form

• a²+b² = c²

• m= rise/over

• y=mx+b

• y=a+mb

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

What is the formula for the Area of a Rectangle?

• A= πr²

• A= 1/2 (lw)

• A= (lw)

• A= 2(l+w)

Tags

CCSS.4.MD.A.3

CCSS.3.MD.C.7B

What is the formula for the Area of a Triangle?

• =1/2(b)h

• =πr²

• =2πr

• =(y₂-y₁)/(x₂-x₁)

Tags

CCSS.6.G.A.1

What is the formula to find the slope given two points?

• y=mx+b

• opposite/hypotenuse

• =dx²

• =(y₂-y₁)/(x₂-x₁)

Tags

CCSS.8.EE.B.5

Sine = 

• sinθ = opposite / adjacent
• sinθ = adjacent / hypotenuse
• sinθ = opposite ∕ hypotenuse

Tags

CCSS.HSG.SRT.C.6

Cosine 

• cosθ = adjacent / hypotenuse
• cosθ = opposite / hypotenuse
• cosθ = hypotenuse / adjacent

Tags

CCSS.HSG.SRT.C.6

Tangent

• tanθ = adjacent / opposite
• tanθ = opposite / adjacent
• tanθ = hypotenuse / opposite

Tags

CCSS.HSG.SRT.C.6