MA 4.1-4.5 Quest Review

Things not included: (4.2) Sin, Cos, Tan (& reciprocals) of 0, 30, 45, 90, 180 + SohCahToa (4.3) Lesson where point is given and you must make a triangle on the graph and find all trig functions

(4.5) triangle area formula if given base and height

A = 1/2bh

(4.5) Heron’s Formula

A = √s(s-a)(s-b)(s-c)

(4.5) triangle area formula if given angle measure and 2 adj. triangle side measures

A = 1/2abSinθ

(4.1) conversion factor for degrees to radians

π/180

(4.1) conversion factor for radians to degrees

180/π

(4.1) what does π equal

180

(4.1) linear speed formula

v = s/t

(4.1) angular speed formula

w = θ/t

(4.1) area of a circular sector formula

A = 1/2(r²)(θ)

(4.1) length of a circular arc formula

s = rθ

(4.4) Law of Sines

sinα/a = sinβ/b = sinγ/c

(4.5) Law of Cosines for a²

a² = b² + c² - 2bc(cosα)

(4.5) Law of Cosines for b²

b² = a² + c² - 2ac(cosβ)

(4.5) Law of Cosines for c²

c² = a² + b² - 2ab(cosγ)

(4.5) perimeter of triangle formula

s = (a + b + c)/2