What is the least common multiple of 6 and 15? a) 3 b) 9 c) 21 d) 30

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β

Is this a polynomial function? i need to know asap

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?