The diagram shows the positions of two towns, Amton and Bisham - OCR - GCSE Maths - Question 9 - 2017 - Paper 1
Question 9
The diagram shows the positions of two towns, Amton and Bisham.
The bearing of Bisham from Amton is $b^\circ$.
The bearing of Amton from Bisham is $6b^\circ$.
Calc... show full transcript
Worked Solution & Example Answer:The diagram shows the positions of two towns, Amton and Bisham - OCR - GCSE Maths - Question 9 - 2017 - Paper 1
Step 1
Step 1: Establish the Relationship Between Bearings
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Given that the bearing of Bisham from Amton is b∘, the bearing of Amton from Bisham can be expressed as:
b+180∘
This is because bearings that are 180 degrees apart are directly opposite on a circle.
Step 2
Step 2: Set Up the Equation
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
From the information provided, we know that:
6b=b+180
This can be rearranged to:
6b−b=180
Step 3
Step 3: Solve for b
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Solving the equation gives:
5b=180
Thus:
b=5180
b=36∘
Step 4
Step 4: Calculate the 3-Figure Bearing of Amton from Bisham
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Now, substituting b back into the relationship derived in Step 1:
Bearing of Amton from Bisham=6b=6×36=216∘
Therefore, the 3-figure bearing of Amton from Bisham is 216∘.