Find the exact value using trigonometric identities
840, 79
Does there happen to be A, B, and C answer choices to choose from?
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12x-5+85=128.......12x+80=128......12x+80-80=128-80....12x=48...... divide both sides by 12 to get x=4. Now most people do not complete solving for the missing value....12(4)-5=43 degrees
Answer:
Step-by-step explanation:
The series is missing from the question. I will answer this question with a general explanation by using the following similar series:

Required
The series
To do this, we simply replace n with the values
means n starts from 0 and ends at 6
means the series is a summation series
So, we have:

