Answer:
All I know for a fact is that number 10 is C
Step-by-step explanation:
I’m pretty sure it’s chad
The measure of a central angle is equal to measure of a minor arc. That makes m<GEH=17x+12. By the Vertical Angles Theorem, m<GEH and m<IEF are equal to each other (m<GEH=17x+12=m<IEF). By the same theorem, m<FEG and m<IEH are also equal (m<FEG=8x-7=m<IEH). The angles in a circle must all add up to 360 degrees, 2(17x+12)+2(8x-7)=360. Solve for x, then plug x into the equation for m<IEF.
Hope this helps!
Answer:
Option C) -cosu is correct
Therefore the simplified expression is 
Step-by-step explanation:
Given expression is 
To find the value of the given expression :
By using the formula 
Substitute A=u and
in the above formula we get

( here
and
)



Therefore option C) -cosu is correct
Therefore the simplified expression is 