Question

What does it mean to use the cosine value of an inverse of tan θ?

Answer 1

Answer:

$\boxed{ \begin{array}{ccc} \displaystyle \theta = {120}^{ \circ} \\ \displaystyle\sin( {120}^{ \circ} ) = \frac{ \sqrt{3} }{2} \end{array}}$

Step-by-step explanation:

we are given a inverse trig

we want to figure out the value of $\theta$

in that case we can consider using unit circle in unit circle the value of arctan (-√3)=120°

therefore,

the value of theta is 120°

likewise by unit circle the value of sine is

$\displaystyle \sin( {120}^{ \circ} ) = \frac{ \sqrt{3} }{2}$