Tangent
Sine
Cosine
SOH CAH TOA
Sine = opposite/hypotenuse
Cosine = Adjacent/hypotenuse
Tangent = opposite/adjacent
For Theta angles, use the inverse with Shift + (trig ratio)
Make sure calculator is in Degree mode before continuing test/exam.
Sine Law
SinA/a = SinB/b = SinC/c
Video on how to apply Sin Law
Cosine Law
a^2 = b^2+c^2-2(b)(c)cosA
b^2 = c^2+a^2-2(c)(a)cosB
c^2 = b^2+a^2-2(b)(a)cosC
Video on how to apply the Cosine Law