7√7
using the ' rule of radicals '
• √a × √b ⇔ √ab
simplifying the radicals
√28 = √(4 × 7 ) = √4 × √7 = 2√7
√63 = √(9 × 7) =√9 × √7 = 3√7
√112 = √(16 × 7 ) = √16 × √7 = 4√7
substituting into the expression
3(2√7) - 5(3√7) + 4(4√7) = 6√7 - 15√7 + 16√7 = 7√7
If all the angles are 60 degrees, this is an equilateral triangle. This means that all the sides have the same lengths. Whatever length side a is, b and c have the same length.
Hope this helps :)
Answer:
What is this?
Can't understand anything!
The answer will be y=2x+1
Answer: Angle of elevation of sun at that time is 24.51° .
Step-by-step explanation:
Since we have given that
Height of a large totem pole near Kalama, Washington = 100 feet
Length of a shadow at noon = 219 foot
We need to find the angle of elevation of sun at that time .
As we know the formula for "Tangent ":

Hence, Angle of elevation of sun at that time is 24.51° .