In the diagram, $SACT$is a straight line and $\angle ABC=90{}^\circ $. Given that $BC=12$

Question

In the diagram, $SACT$is a straight line and $\angle ABC=90{}^\circ $. Given that $BC=12$ cm and $AB=16$ cm. Calculate the length of $AC$. Express, as a fraction in its lowest terms, the value of $\sin x{}^\circ $, $\cos y{}^\circ $.

Accepted Answer

(a) $20\text{ cm}$ (b)(i) $\frac{3}{5}$ (ii) $-\frac{3}{5}$

Trigonometric Ratios in Right-Angled and Extended Triangles

Trigonometric Ratios in Right-Angled and Extended Triangles

Video Solution:

Solution:

Solution locked