It is a trigonometric equation for a right triangle, to find a non-right-angle angle. Using SOHCAHTOA, it is the opposite side divided by the adjacent angle
A Texas Instruments graphing calculator can be used as a basic calculator, a scientific calculator and a graphing calculator.
No.
Usually a graphing calculator should have all the capabilities you expect from a scientific calculator (and more, since it does the graphing). For more details, check the manual of your calculator if you already have one.
A graphing calculator is a scientific calculator with a graphing display window. Otherwise, there are no limits to the type of calculations that can be made on either of them.
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a function key a scientific calculator called TAN
Sin Cos Tan Sec Cosec Cot
tan cot sec cosec sin cos cot
tan cot sec cosec sin cos cot
It is NOT equal. Try calculating tan x, and tan 6x, for a few values of "x", on your scientific calculator. Perhaps you are supposed to solve an equation, and see FOR WHAT values of "x" the two are equal?
The cotangent is the reciprocal of the tangent, so simply calculate, on your scientific calculator, 1 / tan(68).
You cannot because you do not know what R is.
On any scientific calculator, calculate the arctan (inverse tan, tan-1) of (2 / 4.5). Make sure the calculator is using the correct type of angular measure (degrees or radians, depending on what you want).
A Scientific Calculator
A Texas Instruments graphing calculator can be used as a basic calculator, a scientific calculator and a graphing calculator.
No.
e-r diagram of scientific calculator