Question

Given that y = 9 cm and 0 = 23°, work out x rounded to 1 DP.

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PLEASE HELP

Answer 1

x ≈ 3.5 cm

Explanation:

Using the sine ratio in the right triangle

sin23° =
`(opposite)/(hypotenuse)` =
`(x)/(y)` =
`(x)/(9)` ( multiply both sides by 9 )

9 × sin23° = x , then

x ≈ 3.5 cm ( to 1 dec. place )