問題一覧
1
Infinite solutions = consist = coincident line
a1/a2 = b1/b2 = c1/c2
2
Ratio in the form of x
x = m1y2 + m2y1/m1 + m2
3
Cosec 30
2
4
Tan 90
N.D
5
Cos 90
0
6
α β
c/a
7
Cosec 0
N.D
8
Tan 45
1
9
α + β
-b/a
10
Sec
h/b
11
Sec 30
2/√3
12
Cos 0
1
13
Sec 60
2
14
Unique solution
a1/a2 ≠ b1/b2
15
Parallel lines = no solution = inconsist
a1/a2 = b1/b2 ≠ c1/c2
16
Ratio in the form of y
y = m1y2 + m2y1/m1+m2
17
Tan
p/b
18
Tan 60
√3
19
Sec 45
√2
20
Median
l + (n/2 - cf/f) x h
21
Cos 45
1/√2
22
Sin 30
½
23
Sin
p/h
24
Cos
b/h
25
Cosec 60
2/√3
26
Cot 0
N.D
27
Cot 30
√3
28
Sin 90
1
29
Cosec 45
√2
30
Tan 0
0
31
Cosec 90
1
32
Sec 90
N.D
33
Cot
b/p
34
Distance formula
√(x2 - x1)² x (y2 - y1)²
35
Cos 30
√3/2
36
Sec 0
1
37
Mode
l1 = (fm - f0/2f1 - f0 - f2) x h
38
Cot 60
1/√3
39
Sin 60
√3/2
40
Cot 90
0
41
Tan 30
1/√3
42
Sin 45
1/√2
43
Cot 45
1
44
Formula to find roots of the equations
-b ± √b² - 4ac/2a
45
What are the 3 equations of trigonometry?
sin² + cos² = 1. sec² + tan² = 1. cosec ² + cot² = 1
46
Mean
x = £fx/£f
47
Cos 60
½
48
Sin 0
0
49
Cosec
h/p