Question 1
Evaluate without using mathematical tables or calculators, 2 log10 5 – ½ log10 64 + 2 log10 40.
Answer
Question 2
Evaluate without using a calculator.
Answer
Question 3
In the figure below, AB is parallel to DE. Find the value of x and y.
Answer
Question 4
Given that
is an acute angle, find without using tables or calculators,
, leaving your answer in simplified surd form.
Answer
Question 5
- Expand and simplify the binomial expression (2 + x)5 upto the term in x3
- Use your expression to estimate (1.97)5 correct to 4 s.f.
Answer
