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2. Inverse trigonometric functions - Wikipedia

   en.wikipedia.org/wiki/Inverse_trigonometric...

   The most common convention is to name inverse trigonometric functions using an arc- prefix: arcsin(x), arccos(x), arctan(x), etc. [1] (This convention is used throughout this article.) This notation arises from the following geometric relationships: [ citation needed ] when measuring in radians, an angle of θ radians will correspond to an arc ...

3. List of trigonometric identities - Wikipedia

   en.wikipedia.org/wiki/List_of_trigonometric...

   A formula for computing the trigonometric identities for the one-third angle exists, but it requires finding the zeroes of the cubic equation 4x 3 − 3x + d = 0, where is the value of the cosine function at the one-third angle and d is the known value of the cosine function at the full angle.

4. atan2 - Wikipedia

   en.wikipedia.org/wiki/Atan2

   atan2(y, x) returns the angle θ between the positive x-axis and the ray from the origin to the point (x, y), confined to (−π, π].Graph of ⁡ (,) over /. In computing and mathematics, the function atan2 is the 2-argument arctangent.

5. Inverse tangent integral - Wikipedia

   en.wikipedia.org/wiki/Inverse_tangent_integral

   The inverse tangent integral is a special function, defined by: Ti 2 ⁡ ( x ) = ∫ 0 x arctan ⁡ t t d t {\displaystyle \operatorname {Ti} _{2}(x)=\int _{0}^{x}{\frac {\arctan t}{t}}\,dt} Equivalently, it can be defined by a power series , or in terms of the dilogarithm , a closely related special function.

6. Astronomical coordinate systems - Wikipedia

   en.wikipedia.org/wiki/Astronomical_coordinate...

   In solving the tan(A) equation for A, in order to avoid the ambiguity of the arctangent, use of the two-argument arctangent, denoted arctan(x,y), is recommended. The two-argument arctangent computes the arctangent of ⁠ y / x ⁠, and accounts for the quadrant in which it is being computed. Thus, consistent with the convention of azimuth being ...

7. The 4 Worst Drinks if You're Trying to Lose Visceral Fat ...

   www.aol.com/4-worst-drinks-youre-trying...

   Soluble fiber helps keep you full for longer, which can support weight loss. Try replacing a bowl of high-added-sugar cereal with oats, swapping out rice for higher-fiber grains like barley, or ...

8. Judge releases woman who stabbed a classmate to please ...

   www.aol.com/news/judge-releases-woman-stabbed...

   MADISON, Wis. (AP) — A Wisconsin woman who at age 12 stabbed her sixth-grade classmate nearly to death to please online horror character Slender Man will be released from a psychiatric hospital ...

9. Today’s NYT ‘Strands’ Hints, Spangram and Answers for ...

   www.aol.com/today-nyt-strands-hints-spangram...

   According to the New York Times, here's exactly how to play Strands: Find theme words to fill the board. Theme words stay highlighted in blue when found.