Trig Rule Selection 2 (nonRight)
Pythagoras
SOH
CAH
TOA
A(∆)=½(base x height)
Sine Rule
Cosine Rule
A(∆) - Sine Formula
18cm
α
16cm
12cm
c2=a2+b2
sin(θ)=opp/hyp
cos(θ)=adj/hyp
tan(θ)=opp/adj
A(∆)=½bh
a/sinA = b/sinB
c2=a2+b2–2ab sinC
A(∆)=½ab sinC
x
5m
12m
Pythagoras
SOH
CAH
TOA
A(∆)=½(base x height)
Sine Rule
Cosine Rule
A(∆) - Sine Formula
18cm
α
16cm2
12cm
Pythagoras
SOH
CAH
TOA
A(∆)=½(base x height)
Sine Rule
Cosine Rule
A(∆) - Sine Formula
20cm
12cm
α
c2=a2+b2
sin(θ)=opp/hyp
cos(θ)=adj/hyp
tan(θ)=opp/adj
A(∆)=½bh
a/sinA = b/sinB
c2=a2+b2–2ab sinC
A(∆)=½ab sinC
x
38°
130°
12m
Pythagoras
SOH
CAH
TOA
A(∆)=½(base x height)
Sine Rule
Cosine Rule
A(∆) - Sine Formula
12cm
x cm2
16cm
Pythagoras
SOH
CAH
TOA
A(∆)=½(base x height)
Sine Rule
Cosine Rule
A(∆) - Sine Formula
16cm
x cm
58°
c2=a2+b2
sin(θ)=opp/hyp
cos(θ)=adj/hyp
tan(θ)=opp/adj
A(∆)=½bh
a/sinA = b/sinB
c2=a2+b2–2ab sinC
A(∆)=½ab sinC
82m2
5m
x
38°
c2=a2+b2
sin(θ)=opp/hyp
cos(θ)=adj/hyp
tan(θ)=opp/adj
A(∆)=½bh
a/sinA = b/sinB
c2=a2+b2–2ab sinC
A(∆)=½ab sinC
x
12°
38°
5m
12m
Pythagoras
SOH
CAH
TOA
A(∆)=½(base x height)
Sine Rule
Cosine Rule
A(∆) - Sine Formula
18cm
52°
x
12cm
Pythagoras
SOH
CAH
TOA
A(∆)=½(base x height)
Sine Rule
Cosine Rule
A(∆) - Sine Formula
18cm
x
7cm
c2=a2+b2
sin(θ)=opp/hyp
cos(θ)=adj/hyp
tan(θ)=opp/adj
A(∆)=½bh
a/sinA = b/sinB
c2=a2+b2–2ab sinC
A(∆)=½ab sinC
12m
5m
β
c2=a2+b2
sin(θ)=opp/hyp
cos(θ)=adj/hyp
tan(θ)=opp/adj
A(∆)=½bh
a/sinA = b/sinB
c2=a2+b2–2ab sinC
A(∆)=½ab sinC
12m
75°
5m
x
Pythagoras
SOH
CAH
TOA
A(∆)=½(base x height)
Sine Rule
Cosine Rule
A(∆) - Sine Formula
48°
x
18cm
Pythagoras
SOH
CAH
TOA
A(∆)=½(base x height)
Sine Rule
Cosine Rule
A(∆) - Sine Formula
x cm
92cm2
16cm
c2=a2+b2
sin(θ)=opp/hyp
cos(θ)=adj/hyp
tan(θ)=opp/adj
A(∆)=½bh
a/sinA = b/sinB
c2=a2+b2–2ab sinC
A(∆)=½ab sinC
13m
7m
115°
x
c2=a2+b2
sin(θ)=opp/hyp
cos(θ)=adj/hyp
tan(θ)=opp/adj
A(∆)=½bh
a/sinA = b/sinB
c2=a2+b2–2ab sinC
A(∆)=½ab sinC
78°
7m
13m
x m2
c2=a2+b2
sin(θ)=opp/hyp
cos(θ)=adj/hyp
tan(θ)=opp/adj
A(∆)=½bh
a/sinA = b/sinB
c2=a2+b2–2ab sinC
A(∆)=½ab sinC
64°
x
13m
c2=a2+b2
sin(θ)=opp/hyp
cos(θ)=adj/hyp
tan(θ)=opp/adj
A(∆)=½bh
a/sinA = b/sinB
c2=a2+b2–2ab sinC
A(∆)=½ab sinC
12m
δ
5m
Pythagoras
SOH
CAH
TOA
A(∆)=½(base x height)
Sine Rule
Cosine Rule
A(∆) - Sine Formula
13cm
x cm
42°
17°
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