Use the ratio test to determine whether the series is convergent or divergent.

a) Convergent by ratio test

Step-by-step explanation:

Given is the series

General term =

To use ratio test

Let us write n+1 th term

=

Find ratio of n+1th term to nth term

We find that here numerator has degree as 1 and denominator as 3

SInce numerator has more powers, it approaches infinity faster than numerator thus making ratio tend to 0 as n becomes large

Since ratio tends to 0, we have this series is convergent.

28

step-by-step explanation:

8+8+6+6

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation: