Question

Help with MATH please

Answer 1

Explanation:

4). By applying cosine rule for angle R,

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

cos(33°) =
`(x)/(19)` [Equation]

x = 19cos(33°)

= 8.39

5). By applying sine rule,

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

cos(20°) =
`(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°) =
`(15)/(x)` [Equation]

x =
`\frac{15}{\text{tan}40}`

x = 17.88