Shape and Space 3
3 marks · NormalWork out the value of x in the triangle below. Give your answer correct to 3 significant figures.
PQ = 7 cm, angle R = 35°.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
Show answer
4.90 cm (±0.03)
Common mistakes: Incorrectly identifying sides; Using sine/cosine instead
Show mark scheme and worked solution
Marking points
M1 · 1 mark · Identifies x as PQ × tan(35°)
A1 · 1 mark · Carries out calculation correctly with calculator
A2 · 1 mark · Final answer correct to 3 significant figures: 4.90 cm
Worked solution
x = PQ × tan(35°)
x = 4.90 cm (3 significant figures)