Understanding Bearings and Trigonometry

What is the bearing of point B from point A if the bearing of point A from point B is 025°?

• 155°

• 025°

• 205°

• 180°

In the context of bearings, what does the term 'three-digit system' refer to?

• A system where angles are measured from the south

• A system where angles are measured counterclockwise

• A system where angles are expressed with three digits

• A system where angles are measured in radians

Which rule is used to find an unknown angle in a non-right angled triangle when all sides are known?

• Pythagorean Theorem

• Cosine Rule

• Sine Rule

• Tangent Rule

What is the value of angle ABC in the triangle, rounded to one decimal place?

• 71.5°

• 69.5°

• 70.0°

• 68.5°

Which formula is more efficient for calculating the area of a triangle using trigonometry?

• Heron's formula

• Half base times height

• Half AB sin C

• Pythagorean Theorem

What is the cost of the land occupied by the triangular field ABC if the area is 7164.747 square meters and the rate is $70 per square meter?

• $2,000.00

• $3,500.00

• $5,014.33

• $1,532.29

Where along line BC will the greatest angle of elevation of the flat pole be observed?

• At point C

• At point B

• At the perpendicular distance from A to BC

• At the midpoint of BC

What trigonometric function is used to find the greatest angle of elevation in a right triangle?

• Secant

• Tangent

• Cosine

• Sine

What is the greatest angle of elevation of the flat pole, rounded to one decimal place?

• 7.5°

• 10.0°

• 9.0°

• 8.6°

What is the length of the perpendicular distance from point A to line BC?

• 79.608 m

• 12 m

• 180 m

• 85 m