What Are the Applications of the Law of Sines?
TL;DR: The Law of Sines is your go-to whenever a triangle isn’t a right triangle and you’ve got an angle paired with its opposite side. The rule says a over sine of A equals b over sine of B equals c over sine of C — every side and its opposite angle share the same […]
How to Define Sine, Cosine, and Tangent
TL;DR: Sine, cosine, and tangent are the three ratios that unlock every right triangle. For any acute angle theta inside a right triangle, sine is the opposite side over the hypotenuse, cosine is the adjacent side over the hypotenuse, and tangent is the opposite side over the adjacent side. The mnemonic SOH-CAH-TOA packs all three […]
