Which of the following statements are true about functions and relations? 1.All functions are relations.
2.All relations are functions.
3.A function may or may not be a relation.
4.The vertical line test will not work for piece-wise defined relations.

hope it you

step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2

step-by-step explanation: the answer for wha if rt is 10 centimeters long, and wha is st? it’s 6