lowehan002 lowehan002

26-04-2021
Mathematics

contestada

If cos A= -4/5 and A is in the second quadrant, then cos 2A = ?

Respuesta :

briarhoff55 briarhoff55

27-04-2021

Answer:

i think its second pythagreom therom

Step-by-step explanation:

because

Answer Link

Otras preguntas

-(-5.6g + 2h – 9) Does anyone know this ?

A photon of 498nm was emitted from a silicon atoms. Calculate the energy of all the atomic levels of silicon and show that the atomic levels are quantized.

the yearly membership to the san diego zoo for a family with 2 adults and 2 children is $144. the regular admission to the zoo is $18 for each adult and $8 for

que es propiedad intelectual

plzz can anyone solve thisplzzzz guys tomorrow is my exam ..plzz

Which of the following is true of the id? It seeks immediate satisfaction of needs It is absent in newborns. It represents reason.

Kathy has a total of 74 songs on cassettes and CDs in her music library. Each of her cassettes has 6 songs on it, and each CD has 10 songs. If she has a total o

MATH NATION An art museum has a pentagon-shaped room. When drawn to scale on a coordinate grid, the corners of the room are points A(15,21); B(8,21); C(8,10); D

I need to answer this someone Help

describe a person you know who is a good leader