\(\sin ( 45 ^ { \circ } ) = \frac { \sqrt { 2 } } { 2 } ( \) Decimal: \( 0.70710 \ldots ) \)
Steps
\( \sin ( 45 ^ { \circ } ) \)
Use the following trivial identity: \( \sin ( 45 ^ { \circ } ) = \frac { \sqrt { 2 } } { 2 } \)
\( = \frac { \sqrt { 2 } } { 2 }\) \(\cos ( 45 ^ { \circ } ) = \frac { \sqrt { 2 } } { 2 } ( \) Decimal: \( 0.70710 \ldots ) \)
Steps
\( \cos ( 45 ^ { \circ } ) \)
Use the following trivial identity: \( \cos ( 45 ^ { \circ } ) = \frac { \sqrt { 2 } } { 2 } \)
\( = \frac { \sqrt { 2 } } { 2 }\) \(\tan ( 45 ^ { \circ } ) = 1 \)
StepS
\( \tan ( 45 ^ { \circ } ) \)
Use the following trivial identity: \( \tan ( 45 ^ { \circ } ) = 1 \)
\( = 1\)