What are the choices, or do you have to give the answer?
Is that a dice your talking about?
Answer:

Step-by-step explanation:
The given trigonometric equation is
.
We can either use the Pythagorean identity or the right angle triangle to solve for
.
According to the Pythagorean identity,

Recall that, the cosine function is an even function, therefore

.
We substitute this value in to the above Pythagorean identity to get;






But we were given that,
, so we choose the negative value.

The correct answer is B
Answer:
TU > SV
Step-by-step explanation:
Both triangles share congruent to each other.
The side length of a triangle corresponds to the angle measure opposite it. A greater angle measure would have a relative longer side and vice versa.
TU is opposite angle 40°
SU is opposite angle 35°
Therefore TU > SU
As 1 mm = 0.01 dm
3.5 mm = 0.01*3.5 = 0.035 decimeter