Yes so it would be for the first one sin0=0 then you would do sin^-1(0), sin^-1(15) same for cos it would be cos^-1(Angle your looking for here)
A number is divisible by 9<span> if the sum of its digits is </span><span>divisible by 9
here the sum 39 not divisible by 9 </span>
25(3a+2b)
Factor out 25 from the expression
I believe the answer is 2.7.
Hope the helps!!!
