Question
What is the estimated height of the stratosphere, a
layer of the Earth's atmosphere above the troposphere?Solution
The stratosphere starts just above the troposphere and extends to 50 kilometers (31 miles) high. The ozone layer, which absorbs and scatters the solar ultraviolet radiation, is in this layer. The thermosphere starts just above the mesosphere and extends to 600 kilometers (372 miles) high.
Given the sides of a triangle as 3.4 cm and 5.2 cm, what can be the length of the third side (x) in cm?
Ina circle with centre O, AD is a diameter and AC is a chord. B is a point on AC, such that OB = 5 cm and ∠ OBA = 600 If ∠ DOC = 60...
Find the direction cosines of the plane 2x – 3y + 4z – 6 = 0 from the origin.
The sides AB and AC of ∆ ABC are produced to points D and E, respectively. The bisectors of ∠ CBD and ∠ BCE meet at P If A = 720 then ...
If f(0) = 3, f(1) = 5, f(3) = 21, then the unique polynomial of degree 2 or less using Newton divided difference interpolation will be:
Find the distance between the points P (2, -1, 3) and Q (-5, 2, 1)?
PA and PB are two tangents from a point P outside the circle with centre O. If A and B are points on the circle such ∠APB = 128°, then ∠OAB ...
In a ∆ ABC, the bisectors of ∠ B and ∠ C meet at O. If ∠ BOC = 142°, then the measure of ∠ A is
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