If A+B+C=180 then prove
Cos3Acos3B+cos3Bcos3C+cos3Ccos3A=1

4

step-by-step explanation:

answer: it's a

step-by-step explanation:

it would more likely be bald eagle because its has more in the box so about 75%.

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: