Bearings Sine and Cosine Rule

What is
the Bearing
 of A
from B?

• 45

• 130

• 045

• 135

What is
the Bearing
 of A
from C?

• 315

• 225

• 045

• 135

What rule should you use?

• Sine

• Cosine

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

A ship leaves port at 1:00 p.m. and sails in the direction N34°W at a rate of 24 mi/hr. Another ship leaves port at 1:30 p.m. and sails in the direction N56°E at a rate of 18 mi/hr. What is the bearing, to the nearest degree, from the first ship to the second?

• S63°E

• N27°E

• S63°W

• N27°W

Tags

CCSS.HSG.SRT.C.8

What is the Sine Rule used for?

• Finding missing side or angle in a triangle

• Solving a Rubik's cube

• Driving a car

• Baking a cake

A ship is 45 miles east and 30 miles south of port. If the captain wants to travel directly to port, what bearing should he take?

Round to the nearest tenth of a degree

Type your answer like this - example: S35.1W

(a)  

Tags

CCSS.HSG.SRT.C.8

What is the Cosine Rule used for?

• Finding the length of a side or the size of an angle in a triangle

• Solving linear equations

• Determining the volume of a rectangular prism

• Calculating the area of a circle

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Find the value of a.

• 13.35

• 12.91

• 13.05

• 12.83

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Find the missing angle θ

• 27.9^o

• 29.2^o

• 26.8^o

• 45^o

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Choose the appropriate method to solve for x

• Pythagoras' Theorem

• Trig Ratios

• Inverse Functions

• Sine Rule

• Cosine Rule

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11