Suppose ABC Is a Right Triangle with Sides of Lengths $\sin \mathrm { A }$

question 118

Multiple Choice

Suppose ABC is a right triangle with sides of lengths a, b, and c and right angle at C. Find the unknown side length
using the Pythagorean theorem and then find the value of the indicated trigonometric function of the given angle.
Rationalize the denominator if applicable.
-Find $\sin \mathrm { A }$ when $\mathrm { b } = 12$ and $c = 20$

• A) \(\frac { 3 } { 5 }\)
• B) \(\frac { 4 } { 5 }\)
• C) \(\frac { 5 } { 4 }\)
• D) \(\frac { 3 } { 4 }\)

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Definitions:

Eccentric Contraction

A type of muscle activation that increases tension on a muscle as it lengthens, commonly occurring during the lowering phase of a movement.

Muscle Tension

The condition in which muscles of the body remain semi-contracted for an extended period.

Contraction

The tightening of a muscle in response to a stimulus, which results in movement or tension.

Anaerobic Respiration

A form of respiration using electron acceptors other than oxygen, typically seen in conditions where oxygen is scarce.