X is a positive acute angle. That means x is located in the first quadrant and has positive value in sin, cos, tan.
The formula of trigonometry ratio
cos x =

sin x =

From the formula of cosine
cos x =


from the formula above, adjacent side is 3 units, and hypotenuse is 5 units
Draw a right triangle to illustrate the location of the sides. See image attached.
To find the ratio of sine, we need to find the length of opposite side using pythagorean theorem
3² + (opposite)² = 5²
9 + (opposite)² = 25
(opposite)² = 25 - 9
(opposite)² = 16
opposite = 4
The length of opposite side is 4 units
Find sin x
sin x =

sin x =
Answer:
A and B: Isosceles (having two sides of equal length)
C: Equilateral (all sides are equal)
Answer:
80
Step-by-step explanation:
You can figure this out by creating an equation:
1/10 x=8 (This shows that 8 is 1/10 of number x)
x=80 (Solve the equation by multiplying by ten)
Answer: Length of his shadow is 18 feet.
Step-by-step explanation:
Since we have given that
Length of tall monument = 64 foot
Length of shadow = 16 feet
Length of pole where Kyle is standing = 6 feet 3 inch = 72 inches
So, we need to find the length of its shadow.
So, according to question, we get that

Hence, length of his shadow is 18 feet.