Gr 10 Equations Review Flashcards
What is the equation for SOH
sin= opp/hyp
What is the equation for CAH
cos= adj/hyp
What’s the equation for TOA
tan= opp/adj
What’s the equation for similar triangles?
AB AC BC
— = — = —
DE DF EF
What’s the equation for sin law?
a b c
______ = ______= ______
Sin A Sin B Sin C
What’s the equation for cosine law pt 1 side lengths
2 2 2
b = a + c - 2ac(cos B)
What’s the equation for cosine law pt 2 angles
2 2 2
b = a + c - 2ac(cos B)
(move all numbers to left side of equal sign to isolate cos B)
What do you get in standard form?
- y-int
- step 1, 3, 5
- direction of opening
What do you get from vertex form?
- vertex (h,k)
- aos (x=h)
- step 1, 3, 5
- direction of opening
What do you get from factored form?
- x-ints/roots (r, s)
- step 1, 3, 5
- direction of opening
What is standard form?
2
y= ax + bx + c
What is vertex form?
2
y= a (x-h) + k
What is factored form?
y= a (x-r) (x-s)
What is the equation for the shortcut from standard to vertex form?
-b
x = ——
2a
What is the equation of a line?
y = mx + b