Ten less than the square of a. 10-a^2 or a^2- 10

Hi!

Ten less than the square of A.

So LESS is implying subtraction, therefore the 10 needs to be subtracted FROM something, If we look at our options, B is implying that 10 is being subtracted from something, which is what we want!

Therefore our answer is a^2-10

Hope this helps!

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92