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Trigonometry Proofs Involving Half and Double Angles

78,192 views

ProfRobBob

Video Language:

  • English

Caption Language:

  • {{captionLanguage | language_name}} ({{captionLanguage}})

Accent:

  • English (US)

Speech Time:

99%
  • 17:28 / 17:35

Speech Rate:

  • 145 wpm - Conversational

Category:

  • Education

Tags :

Intro:

Video Vocabulary

algebra

/ˈaljəbrə/

noun

part of mathematics in which letters and other general symbols are used to represent numbers and quantities.

written

/rīt/

adjective other verb

Expressed using writing. To invent or create a computer program. mark symbols on surface with pen.

squared

/skwerd/

adjective verb

marked out in squares. To straighten the edge to form a four-sided shape.

identities

/ˌīˈden(t)ədē/

noun other

fact of being particular person or thing. Collections of qualities that makes a person.

dealing

/ˈdēliNG/

noun verb

business relations or transactions. To cope with something - usually troubles.

working

/ˈwərkiNG/

adjective noun verb

having paid employment. action of doing work. To make an effort to do something.

examples

/iɡˈzampəl/

noun other verb

thing characteristic of its kind. Things, people, which represent a category. be illustrated or exemplified.

welcome - welcome

/ˈwelkəm/

adjective exclamation noun verb

Being what was wanted or needed. used to greet someone in polite or friendly way. instance or manner of greeting someone. greet someone arriving in polite or friendly way.

something

/ˈsəmˌTHiNG/

adverb pronoun

used for emphasis with following adjective functioning as adverb. Thing that is not yet known or named.

formula

/ˈfôrmyələ/

noun

mathematical relationship in symbols.

happens

/ˈhapən/

verb

To take place or occur.

cotangent

/kōˈtanjənt/

noun other

(in right-angled triangle) ratio of side other than hypotenuse adjacent to particular acute angle. Ratio of the adjacent to the opposite side of a right-angled triangle.

hopefully

/ˈhōpfəlē/

adverb

in hopeful manner.

denominators

/dəˈnäməˌnādər/

noun other

number below line in vulgar fraction. Bottom number in a fraction.

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