What is the goal of a proof by contradiction? A. The truth of the statement cannot be determined, so the proof is
invalid.
B. The contradiction of the statement is proven false, so the original
statement is therefore proven true.
C. The contradiction of the statement cannot be determined, so the
proof is invalid.
D. The contradiction of the statement is proven true, so the original
statement is therefore proven false.
SUBMIT

B. The contradiction of the statement is proven false, so the original

statement is therefore proven true.

Step-by-step explanation:

We assume the opposite and then get to a point where we get a false statement.   That proves that the the opposite of the opposite ( what we originally wanted to prove) is true.

answer: true

step-by-step explanation:

find the magnitude of the trig term  

csc

(

x

)

−

1

by taking the absolute value of the coefficient.

1

find the lower bound of the range.

tap for more

y

=

−

2

find the upper bound of the range.

tap for more

y

=

0

the range is  

y

≤

−

2

or  

y

≥

0

.

(

−

∞

,

−

2

]

∪

[

0

,

∞

)

{

y

|

y

≤

−

2

,

y

≥

0

}

step-by-step explanation: