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3 years ago

Find the angle of depression

Mathematics

1 answer:

stich3 [128]3 years ago

6 0

Answer:

Step-by-step explanation:

From B on the ground straight up to A and then turn the corner to follow the dotted line...that is a 90 degree angle. So in order to find the angle of depression, subtract 66 from 90 to get 24 degrees. Subsequently, that is also the angle of elevation (the base angle inside the triangle) due to parallel lines and whatnot.

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Can someone help me with this please ?

d1i1m1o1n [39]

If the triangle is a right triangle, then

 (3x)² + x² = (10)² .

 9x² + x² = 100

 10x² = 100

 x² = 10

 x = √10 = approx. 3.1622...

If ' x ' is anything less than √10 , then the short sides are too short
to make a right angle at the top, and the angle where they meet
is obtuse.

' x ' has to be greater than 2.5 ... otherwise the two short sides
can't stretch far enough to reach both ends of the long side (10) .

So, if 2.5 < x < √10 , then there is a triangle, and it's obtuse.

6 0

3 years ago

in one day Annie traveled 5 times the sum of the number of hours Brian traveled and two together they travel 20 hours find this

Stels [109]

Use the distributive property:

5*b+5*2+b=20

5b+10+b=20.

Combine like terms:

6b+10=20.

Subtract 10 from both sides:

6b+10-10=20-10

6b=10.

Divide both sides by 6:

6b/6=10/6

b=5/3=1 2/3.

Brian travels 1 2/3 hours. This means Annie travels

5(1 2/3+2)=5(3 2/3)=5(11/3)=55/3=18 1/3 hours.

Hope this helps!

3 0

3 years ago

Read 2 more answers

Write a linear function f with the values f(0)=−3 and f(7)=11 A function is f(x)=

kotegsom [21]

F(x)= 2x-3
f(0)=2•0-3=0-3=-3 ✔️
f(7)=2•7-3=14-3=11 ✔️

4 0

3 years ago

Which linear function is represented by a graph with a y-intercept of −16 ? y=−16x+1 y=16x−1 y=x−16 y=x+16

Romashka [77]

Answer:

y = x - 16

Step-by-step explanation:

The y-intercept is the value of the function when x = 0.

If f(x) = x - 16, f(0) = 0 - 16 = -16.

A is wrong, because f(0) = -16(0) + 1 = 0 + 1 = 1.

B is wrong, because f(0) = 16(0) + 1 = 0 + 1 = 1.

D is wrong, because f(0) = 0 + 16 = 16.

8 0

3 years ago

After six rolls of a standard die, the experimental probability of rolling a 3 is 26. What do you expect will happen to the expe

Anettt [7]

Answer:

The experimental probability should get closer to the theoretical probability of 1/6 with more trials.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

Experimental probability:

The number of desired outcomes is taken from the results of an experiment.

Theoretical probability:

Found before the experiment happens.

For a large number of trials, the experimental probability will be closer to the theoretical probability.

In this question:

A standard die has 6 sides, one which is 3. So the theoretical probability of rolling a 3 is 1/6.

After six rolls of a standard die, the experimental probability of rolling a 3 is 2/6.

The experimental probability, after six rolls, is 2/6 = 1/3.

What do you expect will happen to the experimental probability if the die is rolled 90 more times?

As the number of trials increase, the experimental probability is expected to get closer to the theoretical probability, which in this case is 1/6.

6 0

2 years ago