Recall that
sin²(<em>θ</em>) + cos²(<em>θ</em>) = 1
for all <em>θ</em>, and given that cos(<em>θ</em>) < 0, we find that
cos(<em>θ</em>) = -√(1 - sin²(<em>θ</em>)) = -√(1 - (2/5)²) = -√(21)/5
Now,
csc(<em>θ</em>) = 1/sin(<em>θ</em>) = 1/(2/5) = 5/2
and
cot(<em>θ</em>) = cos(<em>θ</em>)/sin(<em>θ</em>) = (-√(21)/5)/(2/5) = -√(21)/2
A: Jeremy is correct, agree the congruence postulate states "<span> that if two sides and the included angle of one triangle are </span>congruent<span> to two sides and the included angle of another triangle, then the triangles are </span>congruent<span>."
B: The segment addition postulate can also be used</span>
Answer:
X = 54
Step-by-step explanation:
set the equations equal to each other and then solve for x
Answer:
2.1 yards of blue material will she need.
Step-by-step explanation:
As per the given statement: Sue buys material for a costume she buys 1.75 yards of red material.
As she bought 1.75 yards of the red material.
For blue material she bought 1.2 times as much as yard of the red material.
"times" represents multiply
Blue material she will need = 
therefore, 2.1 yards of blue material will she need.
