Multiplying Sectors
Can you multiply?
o (3x2) and (2x2)
o Compare the insides
Same, you can multiply
o Use the outside dimensions
(3x2)
Multiply across and down
Finding Inverse
Multiply sector to find the determinant
Multiply (1/determinant by the s
Sara Slayton
Test Correction- Chap 6
Problem 2
I messed up my calculations and didnt think there was another set of solutions, although
(as expressed in the directions) there was.
To solve the problem you do law of sines to find the values of A, B, and b.
Problem 3
I wasnt sure how to factor the problem and ended up factoring it wrong and not being
able to quantify the identity.
After finding the common factor (sinx)(1 + cosx), the top of the equation is 1 + 2cosx +
cosx2 + sinx2. (cosx2 + sinx2) is equal
Finding Radians
60(/180) =
Compliment- add up to 90 (/2)
Supplement- add up to 180 ()
Arc Length (S)- S = RA (Radius)(Angle measurement in radians)
Unit Circle
/6 = 30
/3 = 60
/2 = 90
30-60-90
(3/2, )
30
/6
(,3/2)
60
/3
45-45-90
6 Trig Functions with Ang
Compound Interest
A = P(1 + r/n)^(nt)
A= total amount
P= original amount
R = rate
N = number of times per year
T = time
Logarithms
2^x = 8, x = 3
Expanding
Condensing
Exponential/Logarithmic Models
A = Pe^rt
General Form of a Quadratic:
f(x) = ax2 + bx + c
Vertex: (-b/2a)
Standard Form of a Quadratic:
f(x) = a(x - h)2 + k
Vertex: (h, k)
Intercepts: make x or y = 0
Leading Co-Efficient Test
f(x) = 3x2 + 2x + 1
Right end
o Positive co-eff: right size riz
Slope-Intercept Form
y = mx + b
Point-Slope Form
y y1 = m(x x1)
General Form
Ax + By + C = 0
*When x = 2, the slope is undefined
*When y = 2, the slope is 0
Perpendicular
Opposite reciprocal
o 2/3 becomes -3/2
Functions
Not a function whenever y2
Ho