First make sure your calculator is in 'Degree Mode (D)'.
Then using the 'Inverse' of 'Sin' , shown as 'ArcSin' or ' Sin^(-1)' . enter '0.5', followed by '=' . The answer should be '30' ( 30 degrees).
Cotangent is ' 1/tangent' or ' Cosine / Sine'.
To solve for the cosine (COS) of an angle, you can use the unit circle, where the cosine of an angle corresponds to the x-coordinate of the point on the circle at that angle. Alternatively, you can use trigonometric identities or the cosine function on a scientific calculator by inputting the angle in degrees or radians. For specific problem solving, using the cosine rule in triangles may also be applicable to find unknown sides or angles.
To find the cosine of an angle in degrees using a calculator, first ensure that the calculator is set to degree mode (not radians). Enter the angle in degrees, then press the "cos" button. The calculator will display the cosine value for that angle. For example, to find cos(60°), input 60, select "cos," and the result will be 0.5.
You would have to use its opposite tangent, tan-1on your scientific calculator. It would be tan-1(opposite side/adjacent side), and you must have the opposite and adjacent sides of the angle you are trying to solve.
Ue tangent trig. function Tan(angle) = opposite(height) / Adjacent(base) Tan (angle) = 40ft/58ft. Cancel fraction down by '2' Tan (angle) = 20/29 Convert fraction to a decimal , by dividing '29' into '20;'. Tan(angle) = 0.689655172..... Make sure your calculator is in 'Degree'(D) Mode . NEITHER Radian mode, NOR 'G' mode. Use button 'DRG' as required. Then type in 'inverse function/second function/shift' , 'Tan' , The decimal above , ' =' , and the answer should 'pop up' on the screen. Angle = ArcTan or Tan^(-1) ( 0.689655172....) Angle = 34.59228860.... degrees. The answer!!!!!
They are used to find the angle or side measurement of a right triangle. For example, if 2 sides of a right triangle have known values and an angle has a known measurement, you can find the third side by using sine, cosine or tangent.
Cotangent is ' 1/tangent' or ' Cosine / Sine'.
Sine = -0.5 Cosine = -0.866 Tangent = 0.577
It depends on what information you already have. For example, if you know the length of two sides of a triangle, you can easily find the tangent. Or, if you know the length of two angles and a side, you can find the other sides as well, using the tangent, cosine, and sine as needed.
to find the measure of an angle. EX: if sin A = 0.1234, then inv sin (0.1234) will give you the measure of angle A
To find the angle with a tangent of 0.5393457, you can use the arctangent function (inverse tangent). Using a calculator, the angle is approximately 28.5 degrees. Alternatively, in radians, this angle is about 0.497 radians.
usually its used to find a missing angle or length of a right triangle. Of course there is more to trigonometry. any way you can use sine, cosine, and tangent, to fine the missing angle or length
you need to have at least 2 values of the lengths of the triangle and then you can find the angle by sine, cosine or tangent formulas you may try this online calculator for right triangles. http://www.rillocenter.com/calculate/trigonometry.html
You can use your trigonometric functions (sine, cosine, and tangent).
budosnp
To solve for the cosine (COS) of an angle, you can use the unit circle, where the cosine of an angle corresponds to the x-coordinate of the point on the circle at that angle. Alternatively, you can use trigonometric identities or the cosine function on a scientific calculator by inputting the angle in degrees or radians. For specific problem solving, using the cosine rule in triangles may also be applicable to find unknown sides or angles.
(the side opposite the angle) divided by (the side adjacent to the angle) = tangent of the angle (the side opposite the angle) divided by (the hypotenuse of the triangle) = sine of the angle (the side adjacent to the angle) divided by (the hypotenuse of the triangle) = cosine of the angle Once you have the sine OR the cosine OR the tangent of the angle, you can get the measurement of the angle on a scientific calculator, or look it up in a table of trig functions in a book. Check out these articles for a simple free tool and tutorial that will make trig simple enough for ANYBODY to understand! http://www.ehow.com/how_5520340_memorize-trig-functions-losing-mind.html http://www.ehow.com/how_5227490_pass-mind-part-unknown-sides.html http://www.ehow.com/how_5428511_pass-part-ii-unknown-angles.html