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Step-by-step intro to two-step linear equations

CC.HSF.TF.A.1

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Converting between degrees and radians

Trigonometric ratios of angles in radians

Radian measure and arc length

CC.HSF.TF.A.2

Unit circle

CC.HSF.TF.A.3

Solving expressions using 45-45-90 special right triangles

Solving expressions using 30-60-90 special right triangles

Find the exact value of trigonometric ratios

CC.HSF.TF.B.5

Graphing transformations of trigonometric functions

Determining trigonometric functions given their graphs

CC.HSF.TF.B.6

Find the difference of squares: (a - b)(a + b) = (a^2 - b^2)

Find the difference of squares

Solving two-step linear equations using addition and subtraction: ax + b = c

Two-step Linear Equations

Two-step Linear Equations LHS

Solve Linear Equations Using Addition and Subtraction – Word Problem

Two-step Linear Equations — Word Problem

CC.HSF.TF.B.7

Evaluating inverse trigonometric functions

CC.HSF.TF.C.8

Pythagorean identities

CC.HSF.TF.C.9

Sum and difference identities

Sum and Difference Identities

Double-angle identities

Cofunction identities

CC.HSG.C.B.5

CC.HSG.CO.A.1

Line symmetry

Angles in a circle

Chord properties

Circles and circumference

Circle properties

Parallel and perpendicular line segments

Identifying Parallel Lines

Identifying Perpendicular Lines

CC.HSG.SRT.C.6

Use sine ratio to calculate angles and sides (Sin = o / h)

Use tangent ratio to calculate angles and sides (Tan = o / a)

CC.HSG.SRT.C.7

Use cosine ratio to calculate angles and sides (Cos = a / h)

CC.HSG.SRT.C.8

Combination of SohCahToa questions

Word problems relating ladder in trigonometry

Word problems relating guy wire in trigonometry

CC.HSG.SRT.D.10

Law of sines

Ambiguous case: SSA triangles

Law of cosines

CC.HSG.SRT.D.11

Applications of the sine law and cosine law

CC.HSG.SRT.D.9

Area of triangles: 1/2 a*b sin(C)

CC Standards Trigonometry

math

<p>- Hi, and welcome to this question right here. So, we're going to do it by algebra tiles, okay? So, we know that the longer size one, when they're shaded in, you get yourself 3x, right? That's actually is 4x, I'm sorry. Okay, quickly correct that. That's 4x in total. Now, there's another three little boxes that are shaded in, they're for plus three. Now, this is going to equal to the other side, so what do we have over here? That's five times three, 15 empty little boxes. So you get yourselves negative one-five on the other side, okay? So, once you get the equation done you have to solve the x. So, 4x, here's the x, you have to move the three to the other side, okay? How do you do that? Well, simply minus three, you know it's simple math. Subtract the three from both sides. That's canceled. Negative 15 minus another three, think that if you owe men $15 you owe me another $3, so in total you owe me $18 in total, okay? Now, to solve the final x, I would recommend that, you know, just divide by four. You do it whatever you like, but if you're going to do it in a traditional way, just divide it by four to the bottom on both sides of the equation, that way you get the x equals to all by itself then negative 18 divided by four. I don't think that goes into perfectly anymore, so let's do a calculator, get a decimals out from here. We&apos;ve got 4.5, negative 4.5. And that's it. That is your final answer for this question. Thanks for watching.</p>

In this section, we will look at linear equation questions which involve two kinds of operations: addition and subtraction. We will deal with two-step linear equations modeled by diagrams as a start. Then, we will learn how to solve algebraic equations and related word problems.

Solving two-step linear equations using addition and subtraction: <i>ax + b = c</i>