The angle is \theta = Q = 120 and the radius is r = 9.
Give an exact answer, not a decimal approximation.
Enter your answer as an ordered pair of coordinates (x,y) including parentheses.
For each function below enter the letter E if the function is even, the letter O if it's odd, and the letter N if it's neither even nor odd.
f(x) = sin x.
f(x) = cos x.
f(x) = tan x.
f(x) = (sin x) (cos x).
f(x) = sin^2 x.
f(x) = cos^2 x
f(x) = sin x + cos x
Enter T or F depending on whether the statement is true or false.
(You must enter T or F -- True and False will not work.)
1. y = tan (x) has period 2 pi
2. The range of csc (x) is all real numbers
3. y = sec (x) has period 2 pi
4. The domain of tan (x) is all real numbers
5. sin (x) is odd and cos (x) is even
Find the exact value of each without using a calculator:
a) tan{5 pi/3} =
b) tan{7 pi/6} =
c) cot{4 pi/3} =
d) sec{7 pi/4} =
e) csc{5 pi/6} =
更新1:
感謝paul大大的解答 不過第二題的答案有錯誒... 我解了了半天解不出來
