We are given with 90<x<180 degrees and asks for the value of sin(x/2), cos(x/2) and tan(x/2). We just substitute the maximum and minimum angle to the equations. sin (180/2) is equal to 1 and sin (90/2) is equal to

to 1. cos (x/2) is equal to 0≤y≤<span>

. tan (x/2) is equal to 1 to infinity. </span>
Hello!
If we want to round 287.9412 to the nearest tenth, the answer would be 287.9
Since rounding to the nearest tenth would mean rounding the first decimal, that's why it gives us that answer.
Also:
287.9412
2 = hundreds
8 = tens
7 = ones
. = decimal
9 = tenths
4 = hundredths
1 = thousandths
2 = millionths
Hope this helped! c:
It means your solving for x