Question
What is the value of (1 - sin A)/(1 + Sin A) given that
tan A = 5/12 and 0° ≤ A ≤ 90°.Solution
We know tan A = (opposite side)/(adjacent side) = 5/12
Therefore by applying Pythagoras theorem hypotenuse = 13
Sin A = 5/13
(1-sinA)/(1+SinA) = (1-5/13)/ (1+5/13) = 8/18 = 4/9
At a round table, n persons are seated on n chairs. The probability that two friends from same college are sitting next to each other, is:
The deseasonalised time - series data will have only trend (T), cyclical (C) and irregular (I) components and is expressed as:
The grouped data for the observation are as follows.
Class :Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 2-4Â Â Â Â Â Â Â Â 4-6Â Â Â Â Â Â Â Â Â 6-8<...
These seventh decile (D7) of data set 4, 3, 10, 9, 1 is
The coefficient of correlation is the _________ of coefficients of regression.
Five persons A, B, C, D and E occupy seats in a row at random. The probability that A and B sit next to each other is:
Which option is WRONG?
Which option is incorrect for the component of ti.me series.
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