1+ cos2x =
2/1+tan ²x

Use the Pythagorean identity to rewrite the tangent:

Then use the double angle identity for cosine:

and the identity is proved.

answer: i believe it’s 245.04

step-by-step explanation:

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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