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QuestionHow do I write sec and cosec values?Community AnswerValues of cosec, sec and cot can be found by taking inverse of sin, cos and tan respectively for the given angle.

QuestionWhy tan 90 degree is not defined?Community AnswerThe sine of 90° equals 1, and the cosine of 90° equals zero. It happens that the tangent of any angle is equal to its sine divided by its cosine. Thus, the tangent of 90° equals 1 divided by zero. However, dividing by zero is "undefined," because it equals infinity (which is not a defined number). That makes the tangent of 90° undefined.

QuestionHow do I fill a cosec and sec value?Community AnswerYou can reverse the numerator and denominator of sin to find cosec like (30°= 0= 1/0 i.e., not defined) and of cos to find sec.

QuestionWhere can I find the cos when I know the sin and the location of theta?Community AnswerDraw the polar triangle with the theta value and the two sides given by sin. They should be given to you in the form of a fraction, sin=opposite/hypotenuse. Then, use the Pythagorean theorem to solve for the third side and do cos=adjacent/hypotenuse.

QuestionHow can all the trigonometry identities be learned the fastest?DonaganTop AnswererIt's a simple matter of memorization.

QuestionHow do I use tan in trig to find an angle?Community Answertan(x)=sin(x)/cos(x)

QuestionHow can I remember angles exceeding 90 degrees?Community AnswerGraph the equations, sin(x), cos(x), tan(x), csc(x), sec(x), and cot(x). Use the x coordinates 0, 90, 180, 270, and 360 to see how each trigonometric function flows on the graph.

QuestionHow do I use cos in trigonometry to find an angle?DonaganTop AnswererCalculate the ratio between the adjacent side and the hypotenuse, then look up that ratio in a cosine table, which will tell you the angle.

QuestionWhere is sec and cosec?DonaganTop AnswererThe author of this article chose not to display those functions. They're easily found, however: the secant of an angle is the reciprocal of its cosine, and the cosecant of an angle is the reciprocal of its sine.

QuestionIn 2 step while finding sin 45 it is given √2/2=1/2. How it is solved?Mohammad OsamaCommunity AnswerMultiply both the numerator and the denominator by √2, i.e, (√2×√2)/(2 × √2) = 2/2√2 = 1/√2.

QuestionHow can I know angle is exceeding 180 degrees?Community AnswerThe number is greater than 180. So, anything that is greater than the sum on 180 times one.

QuestionWhat is the symbol for "not defined"?Community AnswerThe infinity symbol is used for undefined values.

QuestionWhen perpendicular and hypotenuse are not equal, then why is sine 90 equal to 1?DonaganTop AnswererThe sine of any angle (in a right triangle) equals the side opposite the angle divided by the hypotenuse. In the case of a 90° angle, the opposite side is the hypotenuse, so the sine is the hypotenuse divided by itself, which is 1.

QuestionWhy tan75 is not defined?Samuel C. KingCommunity AnswerIt's actually not undefined; tan(75) = 2 + √3. You can calculate it by dividing the sine of 75 by the cosine of 75.

QuestionWhy do we need to study trigonometrySamuel C. KingCommunity AnswerTrigonometry has a lot of important applications in real life. It can be used to measure the heights of buildings and mountains, it's used in the development of video games, and even criminologists and archaeologists have to use trigonometry in their lines of work.

QuestionHow can I know the angles exceeding 180?Community AnswerYou have to learn the quadrant system of trigonometric ratios.

QuestionWhat is maximum value of cos theta?Mayuresh ArgadeCommunity AnswerThe maximum value of cosθ is 1, and the minimum value of cosθ is 1.

QuestionHow do I remember the trigonometric table serially?Community AnswerIn the first row, put the values (04) in the formula (√x/2) i.e., √o/2, √1/2, √2/2, √3/2, √4/2 and you will get the entries for first row. For second row, just reverse the order of first row. In third row, use formula (tan (θ)= sin (θ)/cos (θ)), put values of sin and cos and you will get the answer. For the fourth row, use Cosec(θ)=1/sin(θ), for fifth, use sec(θ)=1/cos(θ). And for sixth, use cot(θ)= 1/tan(θ). That's it! You don't have to memorize.
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