`sec 255^(@)=`

The value of cos 255^(@)+sin165^(@) is

Use differential to approximate (255)^(1/4)

Using differentials, find approximate value (255)^(1//4)

(sec 2A+1 ) sec ^(2) A= ................. A) sec A B) 2 sec A C) sec 2A D) 2 sec 2A

The value of sec 40^(@)+sec 80^(@)+sec 160^(@) will be

The value of sec 40^(@)+sec 80^(@)+sec 160^(@) will be

The time period of a seconds pendulum is measured repeately for the times by two stop watches. A,B if the readings are as follows, then {:(S.NO,A,B),(1.,20.1 sec,2.56 sec),(2., 2.10sec,2.55 sec),(3.,1.98 sec,2.57sec):}

Cos255^(0)+sin165^(0) =