Use the fundamental identities to find the value of the trigonometric function.
-Find $\cos \theta$, given that $\tan \theta = - \frac { 10 } { 9 }$ and $\sin \theta 0$.
A) $- \frac { \sqrt { 181 } } { 9 }$
B) $- \frac { 9 \sqrt { 181 } } { 181 }$
C) $\frac { \sqrt { 181 } } { 10 }$
D) $\frac { 9 \sqrt { 181 } } { 181 }$

Question

Use the fundamental identities to find the value of the trigonometric function.
-Find $\cos \theta$, given that $\tan \theta = - \frac { 10 } { 9 }$ and $\sin \theta > 0$.
A) $- \frac { \sqrt { 181 } } { 9 }$
B) $- \frac { 9 \sqrt { 181 } } { 181 }$
C) $\frac { \sqrt { 181 } } { 10 }$
D) $\frac { 9 \sqrt { 181 } } { 181 }$

Quizplus · Accepted Answer

The Answer of Use the fundamental identities to find the value of the trigonometric function.
-Find $\cos \theta$, given that $\tan \theta = - \frac { 10 } { 9 }$ and $\sin \theta > 0$.
A) $- \frac { \sqrt { 181 } } { 9 }$
B) $- \frac { 9 \sqrt { 181 } } { 181 }$
C) $\frac { \sqrt { 181 } } { 10 }$
D) $\frac { 9 \sqrt { 181 } } { 181 }$

Use the Fundamental Identities to Find the Value of the Trigonometric