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

If you were to add salt to water , what temperature would you expect it to boil? Assume you’re at sea level 100 c More than 100 c Less than 100 c

where did daisy throw her napkins

Which could be the pH of an aqueous solution with a H3O+ ion concentration that is less than its OH- ion concentration? A. 2 B. 3 C. 4 D. 9

How gamete formation leads to genetic variation.

What are 2 integers with an absolute value of 15?

An ideal spring is mounted horizontally, with its left end fixed. The force constant of the spring is 170 N/m. A glider of mass 1.2 kg is attached to the free e

How did Jim Crow laws get their name?

Helpppppppppppp! Please

An ocean thermal energy conversion system is being proposed for electric power generation. Such a system is based on the standard power cycle for which the work

a dance instructor wants 4 costumes to be yellow and 24 costumes to be blue what is the ratio of yellow to all