geometry Flashcards
1
Q
what is the cosine rule? what is a and A
A
a^2 =b^2+c^2-2bc cosA
a is the side opposite the angle
A is the angle in question
2
Q
What is the sine rule?
A
sinA/a = sinB/b
3
Q
What is the area of a triangle?
A
1/2 absinC
4
Q
Writing Log10 X = a in another form.
A
10^a = x
5
Q
Write lnxy in another form
A
lnx + lny
6
Q
Write ln x/y in another form
A
lnx-lny
7
Q
when to flip the sign of an inequality?
A
When multiplying or dividing both sides
8
Q
Write as partial fractions with denominator (x+a)^2 (x+b)
A
A/x+a + b/x+b + c/(x+a)^2
9
Q
Arc length formula?
A
arc length = r theta
10
Q
sector length formula?
A
Sector length= 1/2 r^2 theta
11
Q
Segment length formula?
A
1/2 r^2 (theta - sin theta)
12
Q
y = b^x in log form
A
x = Log base b Y
13
Q
log based b of b
A
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