Easy -1.2 This is a straightforward recall question about the basic properties of the sine function. Students only need to identify where sin x decreases on a standard interval, requiring minimal calculation or reasoning—simpler than average A-level questions which typically involve multi-step problem-solving.
Question 3:
3 | Correctly identifies the two end
points 90 and 270
π 3π
Condone and
2 2 | AO1.2 | M1 | 90° < x < 270°
Correctly uses inequalities
May state (90, 270) – must be
round brackets
π 3π
Again, condone and
2 2 | AO2.5 | A1
Total | 2
Q | Marking Instructions | AO | Marks | Typical Solution