- Given cos x = 4/5, 0 < x < 90 Find sin 2x, cos 2x, tan 2x?

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Geometry Question #2? What is a fibulator and what does it do? Find the arc length of the curves:
a) x=-4 y^{3/2} from y=0 to y=2.
b) y=1/2(e^x+e^{-x}) from x=0 to x=4.? How have spatial patterns in physical geography impacted the evolution on physical geography? What is the equilibrium expression for C(s) + H2O(g) ⇌ CO(g) + H2(g)?

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