Trigonometry Pop Quiz

Use Fig 1 to write the correct ratio for Sin A

• a/c

• c/b

• a/b

• b/c

Use Fig 1 to write the correct ratio for Tan C

• a/c

• a/b

• c/a

• c/b

Find length AC

In triangle PQR, PQ = 5cm, QR = 6.5cm and angle P = 70⁰. Find the size of angle R.

Find the size of the angle marked a.

In triangle ABC, AB = 5cm, BC = 12cm and angle B = 100⁰. Find the area of the triangle.

Find AC

Find angle ACD.

Hence, find angle ACB.

Find the area of the triangle ADC