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  1. Reciprocal trig ratios (article) | Khan Academy

    Learn how cosecant, secant, and cotangent are the reciprocals of the basic trig ratios: sine, cosine, and tangent.

  2. Free Math Worksheets - Khan Academy Blog

    Mar 15, 2021 · What do Khan Academy’s interactive math worksheets look like? Here’s an example: What are teachers saying about Khan Academy’s interactive math worksheets? “My students love …

  3. Trigonometric ratios review (article) | Khan Academy

    Review all six trigonometric ratios: sine, cosine, tangent, cotangent, secant, & cosecant.

  4. Trigonometric functions | Algebra (all content) - Khan Academy

    This topic covers: - Unit circle definition of trig functions - Trig identities - Graphs of sinusoidal & trigonometric functions - Inverse trig functions & solving trig equations - Modeling with trig functions - …

  5. Midline, amplitude, and period review (article) | Khan Academy

    In summary, to find the period of a function from its graph, identify the repeating pattern, measure the distance along the x-axis between key points of that cycle, and, if applicable, use the function's …

  6. Trigonometric ratios in right triangles (article) | Khan Academy

    Learn how to find the sine, cosine, and tangent of angles in right triangles. The ratios of the sides of a right triangle are called trigonometric ratios. Three common trigonometric ratios are the sine (sin), …

  7. Box plot review (article) | Khan Academy

    The median is 32 . Step 3: Find the quartiles. The first quartile is the median of the data points to the left of the median.

  8. Using trigonometric identities (video) | Khan Academy

    Trigonometric identities like sin²θ+cos²θ=1 can be used to rewrite expressions in a different, more convenient way. For example, (1-sin²θ)(cos²θ) can be rewritten as (cos²θ)(cos²θ), and then as cos⁴θ.

  9. Using the Pythagorean trig identity (video) | Khan Academy

    To find out if cos (theta 1) is positive or negative, we can see from the problem that it tells us that (theta 1) is located in Quadrant 1, which means cos (theta 1) is positive.

  10. Math | Khan Academy

    Units of measurement Volume Coordinate plane Decomposing to find area 3D figures Circles, cylinders, cones, and spheres Angle relationships