#3) If you Let x = 3 sin(u). What are the following in terms of x and 3?

#3) If you Let x = 3 sin(u). What are the following in terms of x and 3? (similar to problems in 8.5)
a. sin(u)

b. cos(u)

c. tan(u)

d. ln[sec(u) + tan(u)], simplify as much as possible. Note: 32 – x2 = (3+x)(3-x)

#7) Please prove that the slant surface area of a right circular cone is s where FinalQ7.jpg

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