Question and answer
two types of measurement?
Inches and Feet
Get an answer
Original conversation
User: two types of measurement?





Weegy: Inches and Feet
Expert answered|sls23|Points 612|

User: where is the origin of trigonometry?

Weegy: Trigonometry was probably developed for use in sailing as a navigation method used with astronomy.[2] The origins of trigonometry can be traced to the civilizations of ancient Egypt, Mesopotamia and the Indus Valley (India), [ more than 4000 years ago.[citation needed] The common practice of measuring angles in degrees, minutes and seconds comes from the Babylonian's base sixty system of numeration. The first recorded use of trigonometry came from the Hellenistic mathematician Hipparchus[1] circa 150 BC, who compiled a trigonometric table using the sine for solving triangles. Ptolemy further developed trigonometric calculations circa 100 AD. The ancient Sinhalese in Sri Lanka, when constructing reservoirs in the Anuradhapura kingdom, used trigonometry to calculate the gradient of the water flow. Archeological research also provides evidence of trigonometry used in other unique hydrological structures dating back to 4 BC.[citation needed] The Indian mathematician Aryabhata in 499, gave tables of half chords which are now known as sine tables, along with cosine tables. He used zya for sine, kotizya for cosine, and otkram zya for inverse sine, and also introduced the versine. Another Indian mathematician, Brahmagupta in 628, used an interpolation formula to compute values of sines, up to the second order of the Newton-Stirling interpolation formula. In the 10th century, the Persian mathematician and astronomer Abul Wáfa introduced the tangent function and improved methods of calculating trigonometry tables. He established the angle addition identities, e.g. sin (a + b), and discovered the sine formula for spherical geometry: Also in the late 10th and early 11th centuries, the Egyptian astronomer Ibn Yunus performed many careful trigonometric calculations and demonstrated the formula ]
Expert answered|sls23|Points 612|

Question|Rated bad
Asked 6/21/2010 7:12:25 AM
0 Answers/Comments
New answers
Rating

There are no new answers.

Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
Questions asked by the same visitor
trigonometry
Question
Updated 280 days ago|1/17/2014 7:40:32 AM
1 Answer/Comment
Trigonometry (from Greek trig non, "triangle" + metron, "measure") is a branch of mathematics that studies relationships involving lengths and angles of triangles.
Added 280 days ago|1/17/2014 7:40:28 AM
This answer has been confirmed as correct, not copied, and helpful.
17,967,243 questions answered
Popular Conversations
How is the infinitive phrase used in the sentence? Morning is the ...
Weegy: To go to college is my greatest ambition. The infinitive phrase "to go to college" is used as noun as subject. ...
10/24/2014 11:04:05 AM| 5 Answers
Brandon's huge collection of paper cranes come from his origami ...
Weegy: The correct sentence is: Brandon's huge collection of paper cranes comes from his origami hobby. User: ...
10/24/2014 7:48:30 AM| 3 Answers
Solve for x. -5x + 12x - 8x = -24
Weegy: Add -5, 12, and -8 to get -1. So -1x=-24. Thus x=24 User: Choose the answer based on the most efficient ...
10/23/2014 12:33:39 AM| 2 Answers
Who was the poet who wrote The Faerie Queene? A. Francis ...
Weegy: Edmund Spenser was the poet who wrote The Faerie Queene.
10/23/2014 1:19:01 AM| 2 Answers
Emily Dickinson's poem "Success" is ironic because the idea of losers ...
Weegy: True User: Poems compact meaning and make unexpected associations. True False
10/23/2014 6:26:33 AM| 2 Answers
What percent of 115 is 29.9
Weegy: What percent of 115 is 29.9? is 26% User: What percent of 22 is 44 Weegy: The 44% of 175 is: Convert 44% in ...
10/23/2014 7:20:21 AM| 2 Answers
What is the solution set of (x - 2)(x - 3) = 2?
Weegy: 2(x - 2) > 3(x - 2); 2x - 4 > 3x - 6; 2x - 3x > -6 + 4; -x > -2; x User: What is the solution set of (3x - ...
10/23/2014 7:32:32 AM| 2 Answers
Which of the following expressions is equal to 5 - 2m? 7 - 2(m + ...
Weegy: 5 - 2m is equal to 7 - 2(m + 1) User: Simplify 6(x + 2) + 7. User: Simplify 3x + 3 + 2. User: How ...
10/23/2014 7:54:53 AM| 2 Answers
Multiply the following fractions. Reduce your answer to lowest terms. ...
Weegy: 12/35 User: multiply and reduce 1 7/10 x 3/4 Weegy: 5/12
10/23/2014 8:49:48 AM| 2 Answers
Weegy Stuff
S
L
1
1
1
1
L
1
L
Points 2577 [Total 14952]| Ratings 0| Comments 2577| Invitations 0|Offline
S
L
1
L
P
C
1
P
C
1
L
Points 1628 [Total 11109]| Ratings 4| Comments 1588| Invitations 0|Offline
S
1
L
1
L
P
P
L
Points 893 [Total 13122]| Ratings 0| Comments 893| Invitations 0|Offline
S
L
Points 605 [Total 2004]| Ratings 0| Comments 605| Invitations 0|Offline
S
1
L
L
Points 505 [Total 6299]| Ratings 3| Comments 475| Invitations 0|Offline
S
Points 482 [Total 482]| Ratings 0| Comments 452| Invitations 3|Offline
S
Points 454 [Total 455]| Ratings 6| Comments 394| Invitations 0|Offline
S
Points 277 [Total 277]| Ratings 1| Comments 267| Invitations 0|Offline
S
P
C
L
P
L
1
Points 48 [Total 6282]| Ratings 0| Comments 48| Invitations 0|Offline
S
L
Points 34 [Total 3572]| Ratings 2| Comments 14| Invitations 0|Offline
Home | Contact | Blog | About | Terms | Privacy | Social | ©2014 Purple Inc.