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www.purplemath.com/modules/invratio.htm

You know that you can take side lengths and find trig ratios, and you know you can find trig ratios (in your calculator) for angles. What is missing is a way to go from ...

www.rasmus.is/uk/t/F/Su30k3.htm

We need to use the inverse function for tan, tan-1, to find the angle. This function is on the same key on the calculator as the tan function (shift tan). We use the ...

www2.clarku.edu/faculty/djoyce/trig/right.html

Back when people used tables of trig functions, they would just look up in the tangent table to see what angle had a tangent of 0.2455. On a calculator, we use the ...

www.carbidedepot.com/formulas-trigright.asp

Enter all known variables (sides a, b and c; angles A and B) into the text boxes. To enter a value, click inside one of the text boxes. Click on the "Calculate" button &...

www.bbc.co.uk/bitesize/guides/zsgjxfr/revision/3

The three trigonometric ratios can be used to calculate the size of an angle in a right-angled triangle. Example. Calculate the angle QPR. Give the answer to one  ...

www.montereyinstitute.org/courses/DevelopmentalMath/COURSE_TEXT2_RESOURCE/U19_L1_T2_text_final.html

Find the exact trigonometric function values for angles that measure 30°, 45°, and 60°. · Solve applied problems using right triangle trigonometry. Introduction.

courses.lumenlearning.com/boundless-algebra/chapter/trigonometry-and-right-triangles

The hypotenuse c, opposite the right angle, is the longest side. The legs. Right triangle: The Pythagorean Theorem can be used to find the value of a missing ...

online.math.uh.edu/MiddleSchool/Modules/Module_3_Measurement/Content/FindingMissingAnglesofRightTriangles.pdf

(Note: We can not divide by “sin” -- it is not a number!) So we need to know the inverse of the sine function. Look at the buttons on your calculator and see if you  ...

sciencing.com/angle-trigonometry-8183540.html

If you can measure the lengths of at least two of the sides of a right triangle, all you have to do is calculate the sine, cosine or tangent of the angle and use a table ...

xaktly.com/MathNonRightTrig.html

The law of sines can be used to find the measure of an angle or a side of a non- right triangle if we know: two sides and an angle not between them or; two angles  ...