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Math Graphs
Houghton Mifflin: Math Graphs: Straightedge 5 [Pdf]
Learners use the given figure and a straightedge to approximate the values of each trigonometric function. The figure is available in PDF format.
Math Graphs
Houghton Mifflin: Math Graphs: Straightedge 6 [Pdf]
Learners use the given figure and a straightedge to approximate the values of each trigonometric function. The figure is available in PDF format.
Khan Academy
Khan Academy: Algebra Ii: Use the Pythagorean Identity
Given the sine (or cosine) of an angle, find its cosine (or sine) using the Pythagorean identity. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Math Graphs
Houghton Mifflin: Math Graphs: Straightedge 7 [Pdf]
The practice problem uses a straightedge and a figure to approximate the solution of each equation. The figure is available in PDF format.
Math Graphs
Houghton Mifflin: Math Graphs: Straightedge 8 [Pdf]
The practice problem uses a straightedge and a figure to approximate the solution of each equation. The figure is available in PDF format.