Answer:
No image or answer choices
Step-by-step explanation:
Tanα=5/12
α=arctan(5/12)°
α≈22.62° (to nearest hundredth of a degree)
The sum of the first five terms is 11/2
<h3>How to determine the sum?</h3>
The series is given as:
1/2, -1,2,-4…
Calculate the common ratio of the series using
r = -4/2
Evaluate
r = -2
The sum is then calculated as:

This gives

Evaluate

Evaluate

Hence, the sum of the first five terms is 11/2
Read more about series at:
brainly.com/question/11346378
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