Ф=angle between the ladder and the ground.
cos Ф= adjacent / hypotenuse
cos Ф=1.5 m / 4 m=0.375
Ф=arccosine 0.375=67.98º≈68º
The angle between the ladder and the ground is 68º
Answer:
Linear
Step-by-step explanation:
Answer: The amount of international attendees is 282.
Step-by-step explanation:
In total there are 422 attendees. Only 140 are from the United States, which means the rest of them are international.
422 - 140 = 282
Hoped this helps! :)
Answer:
Total weight = 70.5 kg
Step-by-step explanation:
Rectangular frame is made from 5 straight pieces of metal. One of them goes through the diagonal of the rectangle.
2 pieces form the length of the rectangular frame, hence, they have a length of 12 m each
2 pieces from the width of the rectangular frame, hence, they a length of 5 m each
To find the length of the diagonal, we can use Pythagoras Theorem:
Hypotenuse² = Base² + Perpendicular²
Hypotenuse² = 5² + 12²
Hypotenuse² = 169²
Hypotenuse = 13
Hence, the length of the piece of metal placed at the diagonal is 13cm
Find the sum of all lengths of the metal pieces.
Total length = 12 + 12 + 5 + 5 + 13
Total length = 47 m
Total weight = 1.5 × Total length
Total weight = 1.5 kg/m × 47m
Total weight = 70.5 kg
Answer: Same-side interior angles are NOT always congruent.