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

What Are The Tumble Dryer Inputs Outputs And Processes?

which expressions are equivalent to 2(4f+2g) select all that apply 8f+4g 2f+(4+2g) 8f+2g 4(2f+g)

if you have 1000g of radioactive waste with a half life of 50 million years what amount will you have left after 200 million years?

Diversification is an investment strategy to __________.

What was a key reason for the post-war cash crunch in America?

Hello, help me please... Thank you very much, good luck!

Are any minerals flammable

Which best completes the sentence? This pumpkin is larger than __________ . A. all the pumpkins in the pumpkin patch B. any pumpkin in the pumpkin patch C.

Which sentence is written correctly? A. Gina shouldn't feel no pain once her wound heals. B. Greg wasn't never going to fly there. C. Barney can't do anythi

I am greater than 30 and less than 40. the sum of my digits is less than 5