Without using a calculator, give the exact trigonometric function value with rational denominator.
-sin 60°
A) $\frac { \sqrt { 2 } } { 2 }$
B) $\sqrt { 3 }$
C) $\frac { \sqrt { 3 } } { 2 }$
D) $\frac { 1 } { 2 }$

Question

Without using a calculator, give the exact trigonometric function value with rational denominator.
-sin 60° 
A) $\frac { \sqrt { 2 } } { 2 }$
B) $\sqrt { 3 }$
C) $\frac { \sqrt { 3 } } { 2 }$
D) $\frac { 1 } { 2 }$

Quizplus · Accepted Answer

The sine of 60 degrees is $\frac{\sqrt{3}}{2}$, based on the special right triangles, specifically the 30-60-90 triangle.

Without Using a Calculator, Give the Exact Trigonometric Function Value 22\frac { \sqrt { 2 } } { 2 }22​​

Without Using a Calculator, Give the Exact Trigonometric Function Value $\frac { \sqrt { 2 } } { 2 }$