Answer:
The answer is (b) ⇒
Step-by-step explanation:
∵ 
∵ √x² = x ⇒ that means to cancel the square root divide
the power by 2
∴ 
∵ √4 = 2 ⇒ √2×2 = √2² = 2
∵ √c³ = 
∴ 
∴ 
∵ In the same base with multiplication we add the power,
in same base with division we subtract the power
∴ 
⇒ 
∴ The answer is (b) ⇒ 
Hope This helps you..!!!!
Answer:
y=tan x and y=cotx
Step-by-step explanation:
We are given functions of all trignometric ratios and asked to find out which has range of all real numbers. Let us discuss one by one
1. y =sinx: False because -1≤sinx≤1 always
2. y=cosx:False because -1≤cosx≤1 always
3. y = tanx: True because tanx can take any value
4. y=cot x: True because cots x can take any value
5. y = csc x: False because this range does not lie between -1 and 1
6. y=sec xFalse because this range does not lie between -1 and 1
Answer:
the equation is
x - 4 = - 9
the number is
-5
Step-by-step explanation:
First, we don't know the number so we represent it with a variable like "x".
then difference simply means subtraction.
" is" simply means = ( equal to)
so the question says that difference of 4 and a number is 9 so we have x - 4 = -9
so now let's solve for x
we group liked terms and make x stand alone.
x = -9 + 4
( +4 because it crossed an equal sign)
x = - 5
we have
x = -5
so we can substitute the -5 into the equation to if its true
from the equation x - 4 = - 9
where we put -5 instead of x
-5 - 4 = - 9
