The value of \(\sqrt{cosec\theta-cot\theta\over cosec\theta+cot\theta}\)\(\div {sin\theta\over1+cos\theta}\) is equal to :
Eight men can complete a work in 54 days. In how many days will 6 men and 12 boys complete the same work if one man works as much as 2 boys?
A person observes that the angle of elevation at the top of a pole of height 5 meters is 30°. Then the distance of the person from the pole is:
18 men can complete a certain work in 15 days working 8 hours a day. How many men can complete the same work in 12 days working 9 hours a day?
If tan (θ1 + θ2) = √3 and sec (θ1 - θ2) = 2/√3 , then the value of sin2θ1 + tan3θ2 is equal to (assume 0°< θ1 - θ2 < θ1 + θ2 < 90°