Question

Question 2: Please help I do not understand this question.

Answer 1

The measurement of AB is 16.23.

Solution:

Given ACB is a right angled triangle.

AC = 10, ∠C = 90° and ∠A = 52°.

cos θ ≈ 0.616

Here AC is the base and AB is Hypotenuse.

To find the length of AB:

$\cos\theta=\frac{\text{Base}}{\text{Hypotenuse}}$

$\cos 52^\circ=\frac{10}{AB}$

$0.616=\frac{10}{AB}$

Do cross multiplication, we get

$AB=\frac{10}{0.616}$

AB = 16.23

Hence the measurement of AB is 16.23.