Question

sec(270-0)= cosec,-cosec,tan,sec what is the answer​

Answer 1

Answer:

suppose he was present for = x days

then absent for = 30-x days

now equation would be

x (60) - (30-x)(10) =  1380

60x - 300 + 10x = 1380

70x = 1380+300 = 1680

x = 1680/70 = 24

Thus he was at work for 24 days.

Step-by-step explanation:

Answer 2

uper ka pdho...hehehehe