A tank is 2/5 full. If 16 litres of water is added to the tank, it becomes 6/7 full. The capacity of the tank is:
Let the capacity of the tank be x litres.
Then, (6x/7 - 2x/5) = 16 <=> 30x - 14x = 16*35 <=> x = 35
If (cos2 θ -1)(1+tan2 θ)+2 tan2 θ =1, 0°<θ<90° then θ is:
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The value of sin 30°cos 60°sin 60°cos 30°- tan 45° is
Solve the following
113 × 87 =?
In ΔABC measure of angle B is 90 deg. If tanA = 12/5, and AB = 1cm, then what is the length (in cm) of side BC?
ΔXYZ is right angled at Y. If m∠X = 60 deg, then find the value of (cotZ + 2)
If a3 = 93 + 1263+ 2173,then which of the following is correct?
Find the number of solutions a pair of linear equation (4x-9y+13=0 and 2x+3y-13=0) have.
Find the area (in sq units) of the triangle formed by lines x - 3y = 0, x – y = 4 and x + y = 4.
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