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What is the cosine of 55 degrees?
0.5735764264 (nearest 10 decimal places).
What is diagonal of 10 by 8 ft square?
If you mean a rectangle then its diagonal using Pythagoras; theorem is 2 times the square root of 41 or about 12.806 feet rounded to 3 decimal places.
What is the height of Qutub Minar when you are at a distance of 5 meters and angle of elevation 86.05?
It is: tan(86.05)*5 = 72.411 metres to 3 decimal places
Can someone find value of cos20cos40cos80?
cos20 x cos40 x cos80 = 0.0300 radians = 0.125 degrees (the value for radians is given to four decimal places, the value in degrees is exact)
What is the exact value of tan 330?
The inexact value of tan 330 is -0.577350, to six significant places. The exact value cannot be represented as a single number because it is a non terminating decimal. To represent it exactly, consider that tan x is sin x over cos x, and that sin 330 is -0.5 and cos 330 is square root of 0.75. As a result, the exact value of tan 330 is -0.5 divided by square root of 0.75.
