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 ( 47+ )
Otras preguntas
Needs helpppp __ 1.¿Qué es lo que celebran muchas personas en EE.UU. durante el 5 de mayo? A)La independencia de México. B)Un dia de comida C)La batalla de Oaxa
Why was Booth so angry on the evening of April 13, 1865? What text evidence supports your response? This question is from "Chasing Lincoln's Killer".
How much energy is contained in matter with a mass of 1 gram (0,001 kilogram)?
35) The volume of a cone is 8 cubic centimeters. What is the volume of a cylinder with the same radius and height?
PLEASE SOLVE FOR VARIABLE 1. 18 = -6/7h 2. -3/4x = 21/8x 3. -1/2z = 5/12
PLS HELP The flu epidemic of 1829-30 wiped out almost three-quarters of the Cowlitz tribe near Fort Vancouver. What was it called at the time? Asian flu Gray fe
Fill in the tables and find the equivalent resistance for the following circuits:
Please help im running out of time
Eleanor needs 13 spools of ribbon for her class project. if each spool has 18 yards of ribbon, how many yards of ribbon did Eleanor buy?
how can a writer bring characters to life?
