Why sin 30 is 1 2




















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Notify me of new comments via email. Notify me of new posts via email. In fact, BCD is an equilateral triangle.

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Email required Address never made public. Name required. Blog at WordPress. No possible combination. What point of reference should I be looking from? The trigonometric function values for all the special angles are derived from the first three regular polygons equilateral triangle, square, and regular pentagon. The trigonometric function values for the first two shapes make use of the Pythagorean theorem.

The values for the pentagon make use of similar triangles. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Asked 7 years, 3 months ago. Active 5 years, 6 months ago. Viewed 2k times.

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