Sine and Cosine Rule Exam Prep

Draw the following triangle and label the sides (a,b,c) and their corresponding opposite angles (A,B,C).  A = 58⁰, B = 76⁰  and  c = 8, using your diagram decide which rule to use and find the size of angle C.

• 136⁰

• 96⁰

• 50⁰

• 46⁰

Find the area of the triangle

• 72.3cm²

• 84.4cm²

• 77.9cm²

• 78cm²

Find the length of x.

• 5.57 

• 10.63

• 5.32

• 9

Find the value of c.

• 19.43

• 31

• 15.16

• 24.24

Find the value of c.

• 24.7

• 28.2

• 23.4

• 25.3

Find the missing side x

• 6.65cm

• 1.74cm

• 5.66cm

• 7.14cm

Find the length of BC using Cosine Rule.

• 626.70

• 25.03

• 313.35

What is the measure of angle A?

• 50 degrees

• 60.63 degrees

• 77.78 degrees

• 74.5 degrees

Find the unknown side length, c.

• 6.52

• 6.38

• 6.91

• 6.67

In the ABC we have AB = 5cm, AC = 6cm, α = 60°. Find the length of the side BC.

• √31cm

• √29cm

• √25cm

• √15cm