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

Simplify: 4(8x+ 1) - 6(1 - 8x)

Research a musician that has a career in radio, television, and advertising and give a brief synopsis of the role he/she plays in our culture. 100 points

A diameter is also a

How does the film ‘hidden figures’ represent discrimination?

4. What additional lenses would be most beneficial to add to your collection and why?

Why do you think it is so difficult to control the spread of invasive species?

Explain photosynthesis in your own words.

What is the central claim of this student’s presentation? We should cherish the seniors in our community by building them a center where they can see friends, s

Convert 0.025 Joules into Electron-Volts

Según la lectura el contrario que la literatura del siglo de oro, el _____ estaba más preocupado por la vida real.