Sin/Cos/Tan Formulas

Question 0

LoC - Solve for a

Answer 0

a^2 = b^2+c^2-2bccosA

Question 1

SOH CAH TOA

Answer 1

Sin = Opposite/Hypotenuse
Cosine = Adjacent/Hypotenuse
Tangent = Opposite/Adjacent

Question 2

LoC - Solve for A

Answer 2

A = cos^-1((a^2-b^2-c^2)/(-2bc))

Question 3

LoS

Answer 3

a/sinA = b/sinB = c/sinC

Question 4

Robert’s Formula

Answer 4

K = (.5a^2sinBsinC)/(sinA) = .5bcsinA

Question 5

Heron’s Formula

Answer 5

K = square root (s(s-a)(s-b)(s-c))

s = .5(a+b+c)