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Q23: Answers – Paper 3 – June 2018
Q23: Answers – Paper 3 – June 2018
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Mark Scheme
Working
ABC is a rightangled triangle.
a) Work out the size of angle ABC.
Give your answer correct to 1 decimal place.
ABC is a rightangled triangle.
a) Work out the size of angle ABC.
Give your answer correct to 1 decimal place.
The length of the side AB is reduced by 1 cm.
The length of the side BC is still 7 cm.
Angle ACB is still 90
b) Will the value of cos ABC increase or decrease?
You must give a reason for your answer.
Question
a) Work out the size of angle ABC.
Give your answer correct to 1 decimal place.
Give your answer correct to 1 decimal place.
[2 marks]
The length of the side AB is reduced by 1 cm.
The length of the side BC is still 7 cm.
Angle ACB is still 90
b) Will the value of cos ABC increase or decrease?
You must give a reason for your answer.
[1 mark]