0.7=7/10
0.8=8/10
0.75=3/4 this is between 0.7 and 0.8
The measure in the scale drawing would be 11 inches.
Answer:
12-5=7
unless it's not a prank or a joke question
Cos2x = (cosx)^2 - (sinx)^2;
sin2x = 2sinxcosx;
Then, (2cos2x)/(sin2x) =2[ (cosx)^2 - (sinx)^2 ] / (2sinxcosx) = [ (cosx)^2 - (sinx)^2 ] / (sinxcosx) = (cosx)^2 / (sinxcosx) - (sinx)^2 / (sinxcosx) = cosx/sinx - sinx/cosx = cotx - tanx;
