In two or more complete sentences, explain why
cos(30°) + cos(60°) ≠ cos(90°)

By using the 30-60-90 right triangle, or the unit circle, you can find (without a calculator) that

Thus, cos(30°) + cos(60°) > cos(90°) and they are not equal to each other.

part a

in a city ice cream is mostly only bought when the temperature is very high as ice cream cools down our

so we can derive the conclusion that as the temperature increases the number of ice creams sold also increases

part b

y intercept is 5

slope is 2

happy to

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