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Date May 2019 Marks available 5 Reference code 19M.2.AHL.TZ2.H_1
Level Additional Higher Level Paper Paper 2 Time zone Time zone 2
Command term Find and Give Question number H_1 Adapted from N/A

Question

In triangle ABC, AB = 5, BC = 14 and AC = 11.

Find all the interior angles of the triangle. Give your answers in degrees to one decimal place.

Markscheme

* This question is from an exam for a previous syllabus, and may contain minor differences in marking or structure.

attempt to apply cosine rule       M1

cosA=52+1121422×5×11=0.4545

A=117.03569

A=117.0        A1

attempt to apply sine rule or cosine rule:       M1

sin117.0356914=sinB11

B=44.4153

B=44.4        A1

C=180AB

C=18.5        A1

Note: Candidates may attempt to find angles in any order of their choosing.

[5 marks]

Examiners report

[N/A]

Syllabus sections

Topic 3—Geometry and trigonometry » SL 3.2—2d and 3d trig
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Topic 3—Geometry and trigonometry

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