Use the Given Function Value(s),and Trigonometric Identities (Including the Cofunction $\cos \beta = \frac { \sqrt { 5 } } { 4 }$

question 46

Multiple Choice

Use the given function value(s) ,and trigonometric identities (including the cofunction identities) ,to find the indicated trigonometric functions.? $\cos \beta = \frac { \sqrt { 5 } } { 4 }$ ? $\sec \beta \text { and } \sin \left( 90 ^ { \circ } - \beta \right)$ ?

• A) \(\sec \beta = \frac { 4 \sqrt { 5 } } { 5 }\) and \(\sin \left( 90 ^ { \circ } - \beta \right) = \frac { \sqrt { 5 } } { 4 }\)
• B)? \(\sec \beta = \sqrt { 5 }\) and \(\sin \left( 90 ^ { \circ } - \beta \right) = 4\)
• C)? \(\sec \beta = \frac { \sqrt { 5 } } { 4 }\) and \(\sin \left( 90 ^ { \circ } - \beta \right) = \frac { \sqrt { 5 } } { 4 }\)
• D)? \(\sec \beta = \frac { \sqrt { 5 } } { 4 }\) and \(\sin \left( 90 ^ { \circ } - \beta \right) = \frac { 4 \sqrt { 5 } } { 5 }\)
• E)? \(\sec \beta = \frac { 4 \sqrt { 5 } } { 5 }\) and \(\sin \left( 90 ^ { \circ } - \beta \right) = \frac { 4 \sqrt { 5 } } { 5 }\)

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