Use the Quadratic Formula to solve the given equation on the interval 
; then use a graphing utility to approximate the angle x. Round answers to three decimal places. 
Definitions:
Heart
A muscular organ in most animals, including humans, which pumps blood through the circulatory system by rhythmic contractions.
Dendrite
Branching processes of a neuron; receives stimuli and conducts potentials toward the cell body.
Nerve Impulses
Electrical signals that travel along the nerve fibers, used for communication between nerve cells.
Cell Body
The part of a neuron that contains the nucleus and most of the cytoplasm and organelles, serving as the metabolic center of the neuron.
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