hold up I’ll answer in a moment
if its a number just put it over 1
(idk what the number is)
add the 2 angles: 89+80= 169
subtract 180-169= 11
11° is the measurement of the final angle
do sin(80)=12/x
x(sin(80))=12
plug in on calculator:
x=12/(sin(80))
The first one is quadratic function
I bielieve the answer is 4