What is the nth term of this sequence 12 22 32 42 52

Classify the polygon by its number of sides. state whether the polygon appears to be regular or not regular. a. heptagon, regular b. heptagon, not regular c. octagon, regular d. octagon, not regular

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.

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