“Geometry: An Interactive Journey to Mastery” S:1 E:18 What Is the Sine of 1?

S:1 E:18 What Is the Sine of 1? So far, you’ve seen how to calculate the sine, cosine, and tangents of basic angles (0, 30, 45, 60, and 90). What about calculating them for other angles – without a calculator? You’ll use the Pythagorean theorem to come up with formulas for sums and differences of the trig identities, which then allow you to calculate them for other angles.