The value of \(sin(78^0+\theta)-cos(12^0-\theta)+(tan^270^0-cosec^220^0)\over sin25^0cos65^0+cos25^0sin65^0\) is :
Watch SolutionSixteen men can finish a work in 8 days. Eight men and nine women working together can finish the same work in 10 days. In how many days will twenty women finish the same work?
Watch SolutionShyam drives his car 30 km at a speed of 45 km/h and, for the next 1 h 20 m, he drives it at a speed of 51 km/h. Find his average speed (in km/h) for the entire journey.
Watch SolutionA man walking at a rate of 4 km/h crossed a tunnel in 18 minutes. What is the length of the tunnel in meters?
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