The sum of the first 24 terms in an arithmetic series is nine times the sum of the first two terms in the series. Find the

sum of the first 90 terms in the series.

iv. The kth term of an arithmetic progression is uk = 89

9

5k.

Given that the sum of the first n terms is equal to -35, find

the value of n.​

The point (-7, -24) is on the terminal ray of angle 0 which is in standard position. a student found the six trigonometric values for angle e. the student's answers are shown. which value(s) are incorrect? sin(8) cos(8) 24 tan(0) sin(0)=25 cos(0) -- tan(ⓡ) - - 24 csc(o)=2 sec(0) --25 cot(6) - za csc(o) sec(0) cot(0) done