All categories

3 years ago

In right ΔPQR, sin P = 3 over 5 , and cos P = 4 over 5. What is tan P?

1 answer:

5 0

Not sure if you learned S=O/H,C= A/H, T=O/A, but Sin is equal to opposite over hypotenuse, so draw a triangle, and label those angles (opposite= 3 and hypotenuse=5). Also, Cos is equal to adjacent over hypotenuse, so label those as well (you already have hypotenuse from Sin, and the Adjacent angle = 4). Therefore, Tan which equals opposite over adjacent is 3/4

You might be interested in

A 200 kg object is going 4 m/s. Find it’s kinetic energy

Karo-lina-s [1.5K]

1/2mv^2

1/2(200)(4)^2

100(16)

1600 J

3 0

3 years ago

Which is true of high resistance wires?

miss Akunina [59]

B.The shorter a wire is, the higher the resistance will be

4 0

3 years ago

A person stands on top of a tall building holding two rocks at a height of 50 meters. At the same moment, one rock is dropped fr

labwork [276]

Answer

The second rock will land 2.4s after the first rock

Explanation:

Given that

Height of the building s=50m

We assume that the first rock is acting with gravity so that a=9.81m/s

And initial velocity u=0

Applying the equation of motion

S=ut+1/2at²

50=0*t+1/2(9.81)t²

50=4.905t²

t²=50/4.905

t²=10.19

t=√10.19

t=3.19sec

For the second rock initial velocity u=8m/s and v=0 and a=9.81

Applying the equation of motion

v=u+at

0=8+9.81t

t=-8/9.81

t=0.81sec

Hence the second rock will land 2.4s after the first rock

I.e

3.19-0.81

3 0

3 years ago

Coherent light with wavelength 591 nm passes through two very narrow slits, and the interference pattern is observed on a screen

kakasveta [241]

Answer:

The wavelength will be "1.182 μm".

Explanation:

The given values are:

Wavelength

$\lambda=591 \ nm$

or,

$=591\times 10^-9 \ m$

Distance,

$d = 3.00 m$

$n = 1$

Distance of fringe from center,

$y = 4.84 \ mm$

We have to find the wavelength of first order dark fringe,

$\lambda = ?$

As we know,

⇒ $y_{bright} =\frac{1\times \lambda\times L}{d}$

On putting the given values in the formula, we get

$0.00484=\frac{1\times (591\times 10^{-9})\times 3}{d}$

On applying the cross multiplication, we get

$\lambda = \frac{0.00484\times 000036632}{0.5\times 3}$

$=1182\times 10^{-9}$

or,

$=1.182 \ \mu m$

8 0

3 years ago

Are collision more likely to happen between stars planets or galaxies

omeli [17]

Stars and planets because of there gravitational pull but planets are the most likely out of all of them because planets are closer together than stars so they pull each other in

8 0

2 years ago