Which of the following method returns the sine of 90 degree?
A. Math.sin(Math.toRadians(90))
B. Math.sine(90)
C. Math.sin(Math.PI)
D. Math.sin(PI)
E. Math.sin(90)
查看答案
Math.asin(0.5) returns _______.
A. Math.PI / 4
B. 30
C. Math.PI / 2
D. Math.toRadians(30)
Math.sin(Math.PI) returns _______.
A. 0.4
B. 0.0
C. 0.5
D. 1.0
Math.cos(Math.PI) returns _______.
A. 0.5
B. -1.0
C. 0.0
D. 1.0
What is Math.round(3.6)?
A. 3
B. 3.0
C. 4
D. 4.0
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