Question

Stare which of the following
3
B
D-
3
13
5. Which of the following is the value of cos (-1170°)?
A 1
- 1
0
2
6. Which of the following is the value of sec(-945°)?
2 B-2 © 2
D - 2
7. Which of the following is the value of cos
57
2
1970
3
?
A
B
2
2
(D
2
1
2
sec20 = 4xy
(x + y)2
is true if and only if-​

Answer 1

Answer:

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