Solve In 10 Sec Only

A train moving with uniform speed passes a pole in 10 sec and a bridge of length 1200 m in 130 sec. speed of the train is :

Solve : 7-(10-x)

Solve : Sec^2( 40^( @ ) ) - Tan^2( 40^(@) )

Solve sec^(2)x tany dx+sec^(2)y tanx dy=0

Solve : 1+2cosec x=-("sec"^(2)(x)/(2))/(2)

Solve any two sub questions from the following : Three lighthouses flash their light after every 5 sec, 10 sec and 15 sec. They flash together at 7 : 00 p.m. When will they next flash together ?

Solve: sec^(2)x tan ydx-sec^(2)y tan xdy=0 , given that y=(pi)/(6), x=(pi)/(3)

Solve each of the following differential equations tan x tan y dx + sec^2x sec^2 y dy=0 .

A particle experiences a constant acceleration for 20 sec after starting from rest. If it travels distance S_1 in the first 10 sec and a distance S_2 in the next 10 sec, Then

A particle starts moving from the position of rest under a constant acc. It travels a distance x in the first 10 sec and distance y in the next 10 sec, then: