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Reciprocal Graphs
Explore the patterns of a reciprocal function with an engaging video lesson that compares graphs of reciprocal functions to different polynomial functions. After describing the key features, the instructor explains the patterns that...
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Plot Straight Line Graphs: Part 1
Demonstrate how to create an input-output table to graph a linear function with a video lesson that begins with evaluating the function for a set of values and then plotting the results. It includes opportunities for learners to practice...
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Parallel and Perpendicular Lines
Investigate parallel and perpendicular lines in the coordinate plane. Watch as the instructor demonstrates graphing the two types of lines. She highlights the patterns of the slope or steepness of the pairs of lines to make the concept...
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Horizontal and Vertical Lines
Build a strong understanding of graphing and writing equations of horizontal and vertical lines. Pupils watch as the lesson instructor explains how to graph horizontal and vertical lines from an equation. She then gives individuals an...
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Introduction to SOHCAHTOA
Explore right triangle trigonometry with a thorough video lesson. The lesson instructor introduces the trigonometric ratios with an examination of right triangle sides and angles. She continues with practice writing the ratios using...
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Area of a Triangle 1/2absinC
Can you find the area of a triangle without knowing the height? Applying trigonometry makes quick work of this type of problem. The video instructor presents problems for scholars to consider and then provides a worked out solution. She...
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SOHCAHTOA - Finding Missing Sides Part 2
Explore some right triangle trigonometry with a straightforward video lesson. The instructor presents problems requiring scholars to use trig ratios to find unknown side measures. She provides worked-out solutions for those needing...
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SOHCAHTOA - Finding Missing Angles
Apply the trig ratios to find unknown angle measures. Learners review the side and angle relationships in right triangles and then apply the ratios to find the angle measures. The video shows several worked-out examples applying all...
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Exact Trig Values - Easy Table
Having trouble remembering the trig ratios of common angles? This resource may be the solution! Using a table, the video instructor describes a memorable pattern. Scholars have an opportunity to practice the pattern during the video.
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SOHCAHTOA - Finding Missing Sides Part 1
Explore the meaning and application of the three trigonometric ratios. A thorough video reviews the trig ratios and then shows how to apply them in triangle problems. The instructor demonstrates several examples finding both side and...
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Sine Rule
Discover how to apply the Law of Sines to find unknown side and angle measures. A detailed video lesson describes the Law of Sines in different forms. The instructor completes two different examples that find both an angle and side...
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Sine or Cosine Rule?
Explore triangle problems that require the Law of Sine or Law of Cosine. A straightforward lesson focuses on deciding when to use each law. The instructor presents several triangles for pupils to consider and describes patterns in the...
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Area of a Triangle 1/2absinC Proof
Demonstrate the derivation of the trigonometric area formula for a triangle. Using the base/height formula and the sine ratio, the lesson instructor demonstrates how to combine the two and create the formula A = 1/2absinC. The video...
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Exact Trig Values - Hand Trick
Having trouble remembering the trigonometric ratios of the common angles? Here's a video for you! The lesson instructor demonstrates a hand trick that helps individuals determine the correct trigonometric ratios. The trick works for...
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Decoding Basic Trigonometric Ratios
Demonstrate the calculator keystrokes necessary for finding a measure of an angle using trigonometry. A straight forward lesson explains how to calculate an angle measure given a sine, cosine, or tangent ratio. The narrator...
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Intro to Trigonometric Ratios
Finding trigonometric ratios is relatively easy; you just have to know where to look. The first installment of a 16-part video playlist shows how to find the sine, cosine, and tangent values for a given angle. It shows how to find the...