Right Triangles And Trigonometric Ratios

Year Published: 1959

Format: 16mm

Sound: sound

Description: Presents Thales' method for finding the height of a pyramid, by using the definitions of sine, cosine and tangent of an angle as ratios of corresponding sides of a right triangle. Derives the values of the sine, cosine and tangent of 30, 45 and 60 degrees.

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