Category: N-Engineering Mathematics – 1
Unit – III – 3.1 TRIGONOMETRY
Quadrant Sign of ratios Remember I All are +ve ( 90 – θ, 360 + θ ) All II Sin and cosec are +ve, Other ratios are –ve ( 90 + θ, 180 – θ ) Silver III tan θ and cot θ are +ve, Other ratios are –ve ( 180 + θ, 270 – θ ) Tea IV cos θ and sec θ are +ve, Other ratios are –ve ( 180 + θ, 360 – θ ) Cups Ratio Falls in Quadrant Change of ratio Sin…
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Matrix and its applications are very important part of Mathematics. Also it is one of the most powerful tools of Mathematics. Matrix notation and operation are used in electronic spread sheet programmes for personal computer, business budgeting, sales projection, cost estimation, analyzing the results of an experiment etc. Also many physical operations such as magnification, rotation and reflection through a plane can be represented mathematically by matrices. Also matrix used in Cryptography. A matrix is a rectangular array of numbers arranged in rows and columns enclosed by brackets. If there…
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