Big ifs, question writers. These are of course approximations.
The "co" in cosine comes from complementary angles. It means since


Answer: cos 48° = 2/3
Similarly,


Answer: tan 69.5° = 8/3
Answer:
y = -3x
Step-by-step explanation:
Slope is -3
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The derivative of (x+1)^2, for this you use the chain rule, to get 2x+2.