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Yearly Revision 2
Sine Rule, Cosine Rule, or Neither?
Factorise
Yearly Revision 2
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1
Factorise
(10x-3)(4x+6)
(10x+6)(4x-3)
(10x-6)(4x+3)
2(5x+3)(4x-3)
2
Sine Rule, Cosine Rule, or Neither?
Cosine Rule
Neither
Sine Rule
3
What phrase to remember the trigonometry functions
SOH-CAH-TOA
SOH-CAH-TAO
SAH-COA-TOH
SCT-OHO-HHA
4
Factorise
(6x+5)(2x-1)
(6x-5)(2x+1)
(6x-1)(2x+5)
(6x+1)(2x-5)
5
Using the Cosine Rule, find the distance from A to C WRITE DOWN THE ANSWER
10km
16.54km
273.57km
20km
6
To find θ, you can use the sine rule.
False
True
7
Adding Fractions
1/3
2/3
4/9
7/9
8
Adding algebraic fractions ...
C
A
B
D
9
Sine Rule, Cosine Rule, or Neither?
Neither
Cosine Rule
Sine Rule
10
To find any of the sides, would you use the Sine Rule, Cosine Rule, or Neither?
Cosine Rule
Sine Rule
Neither
11
This rule is:
The sine rule for angles
the cos rule for angles
The sine rule for sides
The cos rule for sides
12
What symbol is sometimes used in Trigonometry?
⩉
∆
⧹
<
13
Find the solutions to the quadratic equations
-4, -5
-4, 5
4, 5
4, -5
14
Solve the following simultaneous equations
x=1 y=1
x=2 y=1
x=1 y=2
x=7/5 y=14/5
15
This rule is:
The sine rule for sides
The sine rule for angles
The cos rule for sides
the cos rule for angles
16
Which cosine rule is to find an angle?
cos C = (a2 + b2 - c2)/2ab
b2 = a2 + c2 - 2ac cos B
a2 = b2 + c2 - 2bc sin A
c2 = a2 + b2 - 2ab cos C
17
What is the cosine rule?
a2 = b2 + c2 - 4bcCosA
a2 = b2 - c2 - 2bcCosA
a2 = b2 + c2 - 2bcCosA
a = b2 + c2 + 2bcCosA
18
Using trigonometry you can
calculate unknown angles
calculate angles of depression
calculate angles of elevation
calculate unknown side lengths
19
Simplify the algebraic fractions fully
31x/12x2
9x/12x2
9/12x
31/12x
