sin (x) = -1
arcsin (-1) = x
x = -90
and multiples of 360
x =-90, 270,....
x =-90 + 360n where n is an integer
or in radians
-pi/2 + 2*pi *n where n is an integer
Answer:
B
Step-by-step explanation:
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Answer:
the first one is A 19.2 the second one is D 21.4
Sarah's expenses are 2130/3120×100% = 68.3% of her income.
The amount left over is 100% - 68.3% = 31.7%
A) a=3x8
a= 24
B) b=8 divide by 4
b= 2