TMUA Practice Question — Worked Solution

P1·Trigonometry·6.5Mock 0 · P1 · Q16

cosine ruleobtuse triangletriangle inequalityarithmetic progressioncase split

A triangle has sides of lengths

x + 4

2 x + 1

and

3 x - 2

, where

x

is a real number. The triangle is obtuse-angled. Which of the following describes all the possible values of

x

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