Which of the following is NOT equal to sin pi/3 A) sin 2pi/3
B) cos pi/6
C) cos 11pi/6
D) sin 4pi/3

D)  

Step-by-step explanation:

A)

B)

C)

D)

arithmetic sequence

step-by-step explanation:

given that a sequence has terms as

19, 15, 11,

this is represented on a graph

the pattern indicates that the sequence is an arithmetic sequence with i term

a=19 and common difference d =-4

any general term

thus the sequence is reduced by 4 for each successive term starting from 1 and nth term is

24-5n.

first negative term would start after 5th term

5th term =24-25< 0

from 5th term onwards the sequence would be negative.

x = 12

y = 15

step-by-step explanation: