ahenley9898
ahenley9898
11-05-2017
Mathematics
contestada
Verify the identity secx-secx sin^2x=cosx
Respuesta :
ghanami
ghanami
11-05-2017
hello :
* secx = 1/cosx
cos²x+sin²x= 1
**sin²x = 1-cos²x
by (*) :
secx-secx sin²x=(1/cosx) -(1/cosx) sin²x
= (1/cosx)(1- sin²x)....factory :(1/cosx)
by(**)
secx-secx sin²x = (1/cosx)cos²x
secx-secx sin²x = cosx ...( simplify by : cosx)
Answer Link
VER TODAS LAS RESPUESTAS ( 43+ )
Otras preguntas
_________ is an active relationship maintenance process that includes knowledge of the partners opinions and making positive attributions regarding the partners
How did USA won world war 2 ?
A pair of boots originally cost $124. Now they are on sale for 75% of the original price. What is the sale price of the boots?
Please answer the question below.
What do Proles and animals have in common? (1984)
Any help? I dont really understand what to do
Pushing a task to a later point in time in called A. justification. B. rationalization. C. maintenance. D. procrastination.
who helped poland achieve freedom from communist rule
Which equation does not represent a linear function?
If a rectangle has an area of 135 what is the length and width
