s in 3 0 o = 2 1 A n s w er : b . s in x
option b ( s in x ) the equivalent expression to 1/2, so it is correct only.
To find which expression is equivalent to 1/2 when x = 30°, we start by calculating the trigonometric values at 30° :
a. s in ( 30 \textdegree ) = 1/2
b. − s in ( 30 \textdegree ) = − 1/2
c. co t ( 30 \textdegree ) = 1/ 3
d. − co t ( 30 \textdegree ) = − 1/ 3
From these calculations, we can see that the value of s in ( 30 \textdegree ) is indeed 1/2.
The expression equivalent to 2 1 when x = 3 0 ° is sin x , which equals 2 1 . Thus, the correct option is B. sin x .
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Jawaban:Pulau KalimantanPenjelasan:Borneo adalah pulau besar yang tidak memiliki gunung api,menurut beberapa sumber