Answer:
see explanation
Step-by-step explanation:
To find cscθ we require to find the third side of the triangle.
let 3rd side be x and using Pythagoras' identity
x² + 8² = 9²
x² + 64 = 81 ( subtract 64 from both sides )
x² = 17 ( take square root of both sides )
x = 
Then
cosθ = 
= 
cscθ = 
= 
tanθ = 
= 
Answer:
The correct answer is point D (5, negative 2)
Explanation:
The original point asked in the problem says (5, -2). When a number is positive, you do not have to annunciate that it is; in this problem you’d just say the number 5. This being said you can eliminate point A and point C. When listing a number on a coordinate plane you say it as it is. In this case, you would say “five, negative two” rewritten as (5,-2). This would eliminate point B because it is out of order and would bring you into a totally different quadrant. Point D is the only left answer making it correct. Hope this helps !!
It's the first oneeeeeeeeeeeeeee
Answer:
63.2 = y
Step-by-step explanation:
The perimeter is the sum of all the sides
P = 7.8+ y+37.6 + y
171.8 = 7.8+ y+37.6 + y
Combine like terms
171.8 = 45.4 + 2y
Subtract 45.4 from both sides
171.8-45.4 = 45.4 + 2y -45.4
126.4 = 2y
Divide each side by 2
126.4/2 = 2y/2
63.2 = y
D. Warm air rises and cool air sinks
