Suppose That $\triangle A B C$ Is a Right Triangle With $\angle C = 90 ^ { \circ }$

question 17

Multiple Choice

Suppose that $\triangle A B C$ is a right triangle with $\angle C = 90 ^ { \circ }$ . If $A B = 3$ and $B C = \frac { 3 \sqrt { 3 } } { 2 }$ , find the quantities. $\cos A , \sin B$

• A) \(\cos A = \frac { 1 } { 3 } , \sin B = \frac { \sqrt { 3 } } { 2 }\)
• B) \(\cos A = \frac { 1 } { 2 } , \sin B = \frac { 1 } { 2 }\)
• C) \(\cos A = \frac { \sqrt { 3 } } { 2 } , \sin B = \frac { \sqrt { 3 } } { 2 }\)
• D) \(\cos A = \frac { 2 } { 3 } , \sin B = \frac { \sqrt { 3 } } { 2 }\)
• E) \(\cos A = \frac { \sqrt { 3 } } { 2 } , \sin B = \frac { 1 } { 3 }\)

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Definitions:

Scientifically Validating

The process of establishing the reliability and accuracy of findings or theories through empirical evidence and experimental procedures.

Freudian Concepts

Ideas and theories developed by Sigmund Freud, including the unconscious mind, defense mechanisms, and the psychosexual stages of development.

Ego-ideal

A component of Freudian psychology, representing an individual's ideal self and the standards by which they measure their actions.

Superego

To Freud, the moral aspect of personality; the internalization of parental and societal values and standards.