3 years ago

P+Q+R=180 then to prove (cosp/sinq. sinr) + (cosq/sinr. sinp) + (cosr/sinp. sinq)=2

Mathematics

2 answers:

Blababa [14]3 years ago

8 0

typing it here will be problem

never [62]3 years ago

3 0

Answer:

hi byehi bye

Step-by-step explanation:

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Leya [2.2K]

Answer: B, D, and E

Step-by-step explanation: 20% of 45 equals 9 D, D, and E all equal 9

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3 years ago

In which number is the value of the 7 in the number 1.273

Ne4ueva [31]

The hundredths place

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7 0

3 years ago

If the slope of line l is x, and the slope of line m is x+2, and l⊥ m, what is x?

salantis [7]

Answer:

The answer to your question is: x = -1

Step-by-step explanation:

Data

slope of l = x

slope of m = x +2

they are ⊥

Process

If they are ⊥, then, x + 2 = - 1/x

x(x + 2) = -1

x² + 2x = -1

x² + 2x + 1 = 0

(x + 1)² = 0

x + 1 = 0

x = -1

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3 years ago

An airplane spots the floating debris at an angle of depression of 15 degrees. If the plane is at an altitude of 3000. Feet, wha

hodyreva [135]

Answer:

11196.15 km

Step-by-step explanation:

Consider the attached diagram

If the Airplane is at point A and the floating debris at point C, we want to determine the horizontal distance |AB| before they fly over it.

Using trigonometry

$Tan \alpha =\frac{Opposite}{adjacent} \\Tan 15 =\frac{3000}{|AB|}$

Cross multiply

|AB|X Tan 15 =3000

|AB| = $\frac{3000}{Tan 15}$ =11196.15 km

Therefore, the horizontal distance |AB| before they fly over it is 11196.15 km

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3 years ago

Simplify 12 1/2 - 3 3/4

Klio2033 [76]

Answer:

375/8

Step-by-step explanation:

5 0

2 years ago

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