jfvjhsljdl jfvjhsljdl

02-01-2018
Mathematics

contestada

In right triangle ABC, A and B are complementary angles and sin A = 8/9 . What is cos B? NextReset

Respuesta :

tynollette tynollette

02-01-2018

A and B are complementary, that means m∠A+m∠B=90
Recall that sinA=cos(90-A), if sinA=8/9, cos(90-A) is also 8/9
therefore, cosB=cos(90-A)=sinA=8/9

Answer Link

mansoorahmedd67 mansoorahmedd67

24-10-2018

cos B is 8/9 too......................

Answer Link

Otras preguntas

Sentence using "preliminary"? Please use an easy one so I can actually draw it, too :PThanks in advance :)

solve the following problem: (12×10^9)÷(6×10^5)

How do you say" leave me alone" in Spanish

why did europeans feel superior to islam

How many times dose 150 go into 1000

What is the velocity of an object that has a mass of 2.5 kilogram and a momentum of 1,000 kg·m/sec?

How do you say" leave me alone" in Spanish

What energy is transfomed that takes place you lifting a chair?

Dirk Nowitzki of the Dallas mavericks scored 44 points in a recent basketball game. He scored no 3-point shots, but made a number of 2-point field goals and 1-p

The outermost tissue of a tree trunk that is 6 feet in diameter would most likely be (A) epidermis (B) cork (C) cortex (D) phloem (E) xylem