Answer:
25.4
Step-by-step explanation:
D
Using the addition formula for sine
sin(a + b) = sinacosb + cosasinb
and the exact values
sin( ) = cos( ) = , cos() = , sin() =
Note that = + , thus
sin()
= sin( + )
= sin()cos( ) + cos()sin()
= ( × ) + ( × )
= +
= → D
180 - 90 - 62 = 28
17 /sin90 = x/sin28
x = 7.98
x = 8.00
So JL measures 8