This follows directly from the double angle identity for cosine and the Pythagorean identity:
So we have
Answer:
n= -9
Step-by-step explanation:
The calculator is correct haha, You're welcome.
2(6ft x 8ft) for the top and bottom
2(6ft x 3ft) for short sides
2(8ft x 3ft) for long sides
add that all together for the surface area
Answer:
<h2> 18.3</h2>
Step-by-step explanation:
from cosines theorem:
t² = 11² + 14² - 2•11•14•cos87°
t² = 121 + 196 + 308•0.05236
t² = 333.12688
t = √333.12688
t = 18.2517... ≈ 18.3
Answer:
$10
Step-by-step explanation:
125x.08= $10
hope it helps:)