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2. Mnemonics in trigonometry - Wikipedia

   en.wikipedia.org/wiki/Mnemonics_in_trigonometry

   Signs of trigonometric functions in each quadrant. All Students Take Calculus is a mnemonic for the sign of each trigonometric functions in each quadrant of the plane. The letters ASTC signify which of the trigonometric functions are positive, starting in the top right 1st quadrant and moving counterclockwise through quadrants 2 to 4.

3. Rule of marteloio - Wikipedia

   en.wikipedia.org/wiki/Rule_of_marteloio

   The successor of the rule of marteloio was the "Regiment of the Leagues" (regimento das léguas), that was used by Portuguese navigators sailing in the Atlantic Ocean. Or, to use the term introduced by William Bourne (1571), the "Rule to Raise or Lay a Degree", also known as the "Table of Leagues" or the "Rule for Raising the Pole". [33]

4. Trigonometric functions - Wikipedia

   en.wikipedia.org/wiki/Trigonometric_functions

   Basis of trigonometry: if two right triangles have equal acute angles, they are similar, so their corresponding side lengths are proportional.. In mathematics, the trigonometric functions (also called circular functions, angle functions or goniometric functions) [1] are real functions which relate an angle of a right-angled triangle to ratios of two side lengths.

5. Spherical trigonometry - Wikipedia

   en.wikipedia.org/wiki/Spherical_trigonometry

   Construct the great circle from A that is normal to the side BC at the point D. Use Napier's rules to solve the triangle ABD: use c and B to find the sides AD and BD and the angle ∠BAD. Then use Napier's rules to solve the triangle ACD: that is use AD and b to find the side DC and the angles C and ∠DAC. The angle A and side a follow by ...

6. File:Circle Divided into degrees.svg - Wikipedia

   en.wikipedia.org/wiki/File:Circle_Divided_into...

   English: Circle_Divided_into_degrees (10) العربية: دائرة مقسمة إلى تدريجات من 10 درجات Français : Cercle graduée avec des mesures d'angles de 10 degrés.

7. File:Unit circle angles.svg - Wikipedia

   en.wikipedia.org/wiki/File:Unit_circle_angles.svg

   English: Some common angles (multiples of 30 and 45 degrees) and the corresponding sine and cosine values shown on the Unit circle.The angles (θ) are given in degrees and radians, together with the corresponding intersection point on the unit circle, (cos θ, sin θ).

8. 8 Rules You Didn’t Know “The Circle” Contestants ... - AOL

   www.aol.com/8-rules-didn-t-know-130000871.html

   Here are all The Circle rules, including the guidelines that help producers keep the contestants successfully sequestered. Players cannot chat with each other overnight . Netflix.

9. Points of the compass - Wikipedia

   en.wikipedia.org/wiki/Points_of_the_compass

   32-point compass rose. The points of the compass are a set of horizontal, radially arrayed compass directions (or azimuths) used in navigation and cartography.A compass rose is primarily composed of four cardinal directions—north, east, south, and west—each separated by 90 degrees, and secondarily divided by four ordinal (intercardinal) directions—northeast, southeast, southwest, and ...