Trigonometry 2

Angle B = 63, what is the measurement of angle A?

• 17

• 27

• 37

• 90

Answer explanation

The internal angles of a triangle add up to 180 degrees. Answer is therefore 180-90-63 = 27

Side C is 12cm and angle A is 35 degrees. What is the length of side B?

• 5.85 cm

• 6.99 cm

• 6.88 cm

• 6.35 cm

Answer explanation

= Sin (35) x 12 = 6.88cm

Side B is 8cm, angle B is 51 degrees. What is the length of side A?

• 8.5 cm

• 9.87 cm

• 9.25 cm

• 10.56cm

Answer explanation

Tan (51) x 8 = 9.87cm

Side C = 15m, Angle B = 60 degrees. What is the length of side A?

• 11.75m

• 10.87m

• 12.99m

• 13.15m

Answer explanation

Sin (60) x 15 = 12.99m

Side A = 10cm, Angle A = 18 degrees. What is the length of side B?

• 3.24cm

• 4.3cm

• 2.98cm

• 3.55cm

Answer explanation

Tan (18) x 10 = 3.24cm

Side C = 7cm, Angle B = 58 degrees. What is the length of side A?

• 6.0cm

• 5.87cm

• 6.13cm

• 5.93cm

Answer explanation

Sin (58) x 7 = 5.93cm

Side C = 800m, Angle A = 12 degrees. What is the length of side A?

• 782m

• 786m

• 790m

• 791m

Answer explanation

Cos (12) x 800 = 782m

Side C = 24cm, Angle A = 30 degrees. What is the length of side B?

• 10cm

• 12cm

• 14cm

• 16cm

Answer explanation

Sin (30) x 24 = 12cm

Side B = 6cm, Angle A = 28 degrees. What is the length of side C?

• 11.98cm

• 12.20cm

• 12.45cm

• 12.78cm

Answer explanation

6/Sin(28) = 12.78cm

Side B = 3cm, angle B = 52 degrees. What is the length of side C?

• 4.78cm

• 4.87cm

• 4.91cm

• 5.11cm

Answer explanation

3/Cos(52) = 4.87cm