Answer:
< 1 = 125 degrees
< 2 = 55 degrees
< 3 = 125 degrees
< 4 = 55 degrees
< 5 = 125 degrees
< 6 = 55 degrees
< 7 = 125 degrees (given)
< 8 = 55 degrees
Step-by-step explanation:
1 and 3 are equal because they are vertical angles, therefore proving their congruence.
7 and 1 are equal because they're alternate exterior angles, which are congruent.
2 and 4 are vertical, which is congruent.
5 and 7 are vertical.
6 and 8 are vertical.
Answer:
Answer = Option A;
sinθ = ±
tanθ = ±
Step-by-step explanation:
cosθ = 
Remove the negative sign and evaluate cosθ = 4/7
cosθ = adjacent/hypotenuse.
Please see attached image for the right-angle triangle representation.
Let opp = length of opposite side of the triangle.
Let adj = length of adjacent side of the triangle.
Let hyp = length of hypotenuse side of the triangle
Using Pythagoras theorem,

Take the square root of both sides.
±
opp = ±
sinθ = opposite/hypotenuse
sinθ = ±
tanθ = opposite/adjacent
tanθ = ±
Answer:
Step-by-step explanation:
Answer:
d=42
Step-by-step explanation:
If you do 105-63 you get 42 which is d. Hope this helps!