Excel a Level Math’s revision test and
correct answers below for the 2024
candidates
1. 1 + tan2θ - Correct Answers = sec2θ
2. cot2θ + 1 = cosec2θ - Correct Answers = cosec2θ
3. Sin2θ - Correct Answers 2sinθcosθ
4. Cos2θ - Correct Answers cos²θ-sin²θ
5. 2cos²θ-1
6. 1-2sin²θ
7. Tan2θ - Correct Answers 2tanθ / (1 - tan²θ)
8. How do you write a rational number in a proof? - Correct Answers
a/b
9. What does y=|f(x)| do? - Correct Answers Reflects values below the
x-axis in the x-axis
10. What does y=f (|x|) do? - Correct Answers Reflects values of
x≥0 in the y-axis
11. Arithmetic sequence formula - Correct Answers a₁+ (n-1) d
12. Geometric sequence formula - Correct Answers uₙ = areⁿ⁻¹
13. Convergent geometric series - Correct Answers Convergent if
|r|<1 where r is the common ratio
14. Periodic sequences - Correct Answers Sequence is periodic if
terms repeat in a cycle
