ABCpraise ABCpraise

23-01-2017
Mathematics

contestada

Prove Tan x - 1/Tan x + 1 = 1 - cot x/1 + cot x

Respuesta :

LammettHash LammettHash

23-01-2017

[tex]\dfrac{\tan x-1}{\tan x+1}=\dfrac{\dfrac{\sin x}{\cos x}-1}{\dfrac{\sin x}{\cos x}+1}=\dfrac{\sin x-\cos x}{\sin x+\cos x}=\dfrac{1-\dfrac{\cos x}{\sin x}}{1+\dfrac{\cos x}{\sin x}}=\dfrac{1-\cot x}{1+\cot x}[/tex]

Answer Link

Otras preguntas

Which are the intercepts of the equation y+2=4(x+1) ?

4. Find the difference. (-7p + 10) - (p + 12)

8. Karen had a balance of $57 in her checking account. She wrote a check for $90. What is her new balance?

Raj pays $7.99 per month for a movie subscription service. One month he also rents 3 movies from the service. His bill for the month is $19.96. How much does

Round 4.789443 to the nearest whole number

please help! no links!Three short translations in french 1. my sister went to school 2. my mom went to work 3. my dad went outside (optional question)

the sum of three numbers is 6. the third number is the sum of the first and second numbers. the second number is 7 more than the first number. find the three nu

the texas constitution was designed to reflect the principles found in the u.s. constitution. under the u.s. constitution the president can veto or sign bills i

why is -14 smaller than 14

2. Dakota moves a magnetic toy train toward a magnet that cannot move. What happens to the potential energy in the system of magnets during the movement? (༢) ས་