Gegee: $x = 152,4^{ ext{o}}$ en $y = 24,8^{ ext{o}}$ Bepaal die volgende: 3.1.1 $sin(x - y)$ 3.1.2 $\frac{1}{2} sec\left(\frac{x}{2} + 80^{\text{o}}\right)$ - NSC Technical Mathematics - Question 3 - 2023 - Paper 2

First, we find $\frac{x}{2}$:

$\frac{152,4^{\text{o}}}{2} = 76,2^{\text{o}}$

Next, we evaluate:

$\frac{x}{2} + 80^{\text{o}} = 76,2^{\text{o}} + 80^{\text{o}} = 156,2^{\text{o}}$

Now we compute:

$sec(156,2^{\text{o}}) = \frac{1}{cos(156,2^{\text{o}})}$

Finally, the whole expression is:

$\frac{1}{2} sec(156,2^{\text{o}}) \approx \frac{1}{2} \cdot 2,97 \approx 2,97$