'Related angles' presentation slideshows

Sines, Cosines and Tangents

Sines, Cosines and Tangents. Of angles over 90 0. For Right Angled Triangles. 8cm. H. O. 4 cm. 30 0. Sin x = O / H. A. Sin 30 0 = 4 / 8 = 0.5. What about angles over 90 0 ?. What about angles over 90 0 ?. 30 0. Angles measured anti clockwise from horizontal. If angle is 150 0.

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