= cos³ t, y = sin³ t, 0≤ t ≤ 2π Find the arc length of the astroid: x =

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I need to know how I get 65 degrees out of sin(.909) because sin of (.909)=.79 and sin^-1=1.14 and I do not have arcsin on my calculator

find sec (tan^-1(u+2/3). Assume u+2/3>0. Do not simplify

terminal side of theta defined by y=4x, x<0

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Using the equation below at angle of 45 degrees, find T^-1 and T^-T

Find the lengths of the curves 1. The cardioid r = 1 + cos u 2. The curve r = a sin^2 (u/2), 0<= u<=pai, a >0

Explain how to use a sine curve to obtain a cosecant curve. Why can the same procedure be used to obtain a secant curve from a cosine curve?