baniyaanu83 baniyaanu83

23-10-2021
Mathematics

contestada

prove cos a = 5/13 pls solve it and no link pls..........

prove cos a 513 pls solve it and no link pls class=

Respuesta :

IRobert IRobert

23-10-2021

Answer : The demonstration is below :)

Step-by-step explanation :

We use Pythagoras' theorem :

In the triangle ABC we have :

AB² = AC² - BC² = 15² - 9² = 144 = 12²

In the triangle ABD we have :

DB² = AD² - AB² = 13² - 12² = 5²

cos(a) = BD/AD = 5/13

Answer Link

Otras preguntas

Find the solution set of this inequality. Enter your answer in interval notation using grouping symbols. |8x-4| ≤ 12

Which of the following quantities are units of momentum? (There could be more than one correct choice.) A)N m B) kg s/m C) kg m/'s D)N-s 12 Points] E) kg m2/s2

Modern atomic theory states that atoms are neutral. How is this neutrality achieved?

Which element is least likely to undergo a chemical reaction?

What values of data might affect the statistical measures of spread and center

Jade International is a highly diversified global firm with headquarters in New Jersey. It manufactures a variety of products ranging from home security systems

an organism has the following traits multicellular cant photosynthesize has a skull. wht kingdom does this organism most likely belong too?

In a dihybrid cross for round and yellow seeds (RrYy x RrYy), what is the probability of having green and wrinkled seeds?.THEKey: R = roundr = wrinkledY = yello

Match each description to the correct poetic form. sometimes consists of three ——————————- 1)stages: lament, praise, and consolation 2)a type of lyrical poem 3)

which is a characteristic of mixtures?