Question

A building lot in a city is shaped as a 30° -60°
-90° triangle. The side opposite the 30° angle
measures 41 feet.

a. Find the length of the side of the lot opposite
the 60° angle.

b. Find the length of the hypotenuse of the
triangular lot.

c. Find the sine, cosine, and tangent of the 30°
angle in the lot. Write your answers as decimals
rounded to four decimal places.

Answer 1

Explain your answer so I could understand...

Answer 2

Are you studying trigonometry?
See http://www.khanacademy.org/math/trigonometry/v/basic-trigonometry
for help on it.

Also, it helps if you memorize
sin(30º)= 1/2
cos(30º)= \(\sqrt{3}/2 \)
and
tan(30º)= sin(30º)/cos(30º)= \( 1/\sqrt{3} \)

Answer 3

this is Pre-ALG

Answer 4

People do study 30-60-90 triangles, because they have special properties.
but part (c) in the question asks for sin,cos, tan, and that is trig. did you learn the definitions of sin,cos,tan?