Question

Find the value for the side marked below.

Round your answer to the nearest tenth.
21
у
80°
y = [?
]

Answer 1

Solution given:

angle : 80°

hypotenuse:y=?

opposite=21

we have

Sin 80=
`\frac{opposite} {hypotenuse}=(21)/(y)`

doing crisscrossed multiplication

we get

y=
`(21)/(Sin 80°)`

y=21.32