I really need help!

1) 34.5°

2) 0.25(180-B)=D

Step-by-step explanation:

180-42=138

1/2x138=69

1/2x69=34.5

0.25(180-B)=D

where's the diagrams?

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: