Non Right Triangles

Which rule could you use to find the side opposite angle B? 

• cosine rule
• sine rule
• both sine rule and cosine rule
• Pythagorean theorem

Which could you use to find another angle of the triangle? 

• Cosine rule
• Sine rule
• Pythagorean theorem
• both sine rule and cosine rule

Which rule could you use to find angle K? 

• cosine rule
• sine rule
• both sine rule and cosine rule
• Pythagorean theorem

Which rule could you use to find side p? 

• sine rule
• cosine rule
• both sine rule and cosine rule
• Pythagorean theorem

Which rule would you use to find angle Q?

• sine rule
• cosine rule
• Neither sine rule nor cosine rule
• Pythagorean theorem

When using the sine rule how many parts (fractions) do you need to equate?

• All 3 parts
• 1 part
• 2 parts

Triangle ABC has side a = 3, side b = 5, and side c = 7. Find the size of angle A. 

• 22⁰
• 38⁰
• 120⁰
• 150⁰

Find the size of angle A?

• 50 degrees
• 60 degrees
• 78 degrees
• 74 degrees

What is the length of side x?

• 130 cm
• 112 cm
• 150 cm
• 105 cm

Find the size of angle A

• 53.6
• 13.3
• 113.1