Answer:
8/25
Step-by-step explanation:
4/5 *2/5
Multiply the numerators
4*2 = 8
Multiply the denominators
5*5 = 25
8/25
Answer:
Step-by-step explanation: is b
You can multiply each top and bottom by sqrt 15
then it will be
0.01 gram is equal to B. 1 centigram.
The angle of elevation that the instruments have to record to be at the correct height is given as 79°
<h3>How to solve for the angle of elevation</h3>
We have 2x + 70 = 180
We have to find the value of x
2x = 110
x = 55
y/sin x = 225/sin70
This is the use of sine rule
From here we would have
y = 225(sinx/sin70)
Remember x = 55
y = 225(sin55/sin70)
y = 196.1378
tanθ = 1000/y
tan θ = 1000/196.1378
tanθ = 5.098
θ = tan⁻¹5.098
= 78.90°
Hence the conclusion is that the angle of elevation has to be 78.9 degrees for it to be at the correct height.
Read more on the angle of elevation here:
brainly.com/question/88158
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