Question

Help with MATH please

Answer 1

Answer:

Step-by-step explanation:

4). By applying cosine rule for angle R,

    cos(∠R) = $\frac{\text{Adjacent side}}{\text{Hypotenuse}}$

    cos(33°) = $\frac{x}{19}$ [Equation]

    x = 19cos(33°)

       = 8.39

5). By applying sine rule,

    cos(20°) = $\frac{\text{Opposite side}}{\text{Hypotenuse}}$

    cos(20°) = $\frac{15}{x}$ [Equation]

    x = $\frac{15}{\text{cos}20}$

    x = 15.96

6). By applying tangent rule,

    tan(40°) = $\frac{\text{Opposite side}}{\text{Adjacent side}}$

    tan(40°) = $\frac{15}{x}$ [Equation]

     x = $\frac{15}{\text{tan}40}$

     x = 17.88