sec72-sec36

Traffic light at three different road crossings change after every 48 sec, 72 sec and 108 sec respectively. If they all change simultaneously at 7:00:00 hours, then at what time will they again change simultaneously ?

Write the decreasing order of sec1,sec2,sec3,sec4,sec5,sec6

The value of sec20+sec40+sec160 is

sec^4A-sec^2A = ………………

lim_(x rarr0)(sec4x-sec2x)/(sec3x-sec x)=

(sec2A+1)sec^2A=

The solution of the differential equation cos y log(sec x+tan x)dx=cos x log(sec y+tan y)dy is (a) sec^(2)x+sec^(2)y=c(b)sec x+sec y=c(c)sec x-sec y=c(d)Non of these

sec72^(@) - sec 36^(@) =