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Problem $23\mathrm{.}003$ Rays from the Sun $$ DEPENDENT MULTI$-$PART PROBLEM $$ ASSIGN ALL PARTS

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Light rays from the Sun, which is at an angle of $34\mathrm{.}3$ above the western horizon, strike the still surface of a pond.

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Problem $23\mathrm{.}003.$a $$ Angle of incidence

What is the angle of incidence of the Sun$$s rays on the pond?