Please explain how you get the answer. 1. Tan(-20°)= ?

For example: Tan(-20°)=?
Has 4 choices which are:
-tan 20°
tan 20°
tan (-160°)
-tan 160°

2.cos(-49°)=?

3.sin(-150°)=?

4.sec(-121°)=?

5.cos(-170°)=?

6.tan(-163°)=?

7.csc(-112°)?

8.sin(-295°)=?

9.cos(-15°)=?

10. Tan(-216°)=?

pakistan's principal natural resources are arable land and water. about 25% of pakistan's agriculture accounts for about 21% [1] of gdp and employs about 43% of the labour force. in pakistan, the most agricultural province is punjab where wheat and cotton are the most grown.

1) 2/5

2) zero=0/1

3) zero=0/2

4) -4/5

5) undefined=3/0

17

step-by-step explanation:

51/3=17

thus 17 is your answer.