Use a half-angle identity to find the exact value of sin pi/8
<span><span /><span>In an observational study, During the discussion,
the author can indicates conclusion and explains the limitation of the study he
did.
This is where the author can give the scope and limitations of his study and
also to discuss what is the future use of his study. In introduction is where
he can write the reason why he studied his research, in methodology is where he
can write when , where and how he did his research and in result is where he
can state what problem his research answered or what’s the edge of his
research.</span></span>
Its 108 because the triangle is acute so all angle are less than or equal to 90 and i did 54+54+72=180 ant the measurement of the exterior angle is 108
Step-by-step explanation:
180 - (value of x) = answer
m° equal to c°
