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jekas [21]
2 years ago
9

The question is in the picture. I’ll give brainly if correct!!

Mathematics
2 answers:
shutvik [7]2 years ago
8 0

Answer:

\huge\boxed{\sf -sin \theta}

Step-by-step explanation:

<u>Given expression:</u>

= cos (270 - θ)

We can write 270 as 180 + 90

= cos (180 + 90 - θ)

= cos {(180 + (90 - θ)}      (cos 180 = -1)

= -1 {cos (90 - θ)}              (cos (90 - θ) = sin θ)

= -1(sin θ)

= -sin θ

I think there is some problem in the options.

\rule[225]{225}{2}

Hope this helped!

<h3>~AH1807</h3>
Anvisha [2.4K]2 years ago
4 0

Answer:

cos(270-theta)

= cos{180+(90-theta)}

=-cos theta(90-theta)

=-sin theta

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Find the measurements of ∠ and ∠.
kirza4 [7]

Answer:

<em>m∠ FAE = 20°, m∠ CAD = 60°</em>

Step-by-step explanation:

If you take a look at the picture below, this explanation proves that the measure of FAE ⇒ 20°, and m∠ CAD = 60°;

8 0
3 years ago
Dana is planning to drive 400 miles from
GaryK [48]

Answer:

A. 8 gallons

B. Drive by car is $59.4 cheaper than travel by train

Step-by-step explanation:

According to the scenario, given data are as follows,

Total drive = 400 miles

Total drive per gallon = 50 miles

Fuel cost per gallon = $4.45

A. So, Total fuel required to drive 400 miles can be calculated as follows,

Total fuel required =  Total drive ÷ Total drive per gallon

By putting value, we get,

Total fuel required = 400 ÷ 50

= 8 gallons

B. Total cost if drive by car = 8 gallons × $4.45 = $35.6

Cost if travel by train = $95

Hence it is clearly shows that drive by car is much cheaper than travel by train.

Cost saved by travel by car = $95 - $35.6 = $59.4

So, drive by car is $59.4 cheaper than travel by train.

5 0
3 years ago
Pleaseeeeeee help mee
BlackZzzverrR [31]

Answer:

The solution of the given trigonometric equation

                   x = \frac{\pi }{6}

Step-by-step explanation:

<u><em>Step(i):</em></u>-

Given  

                cos( 3x - \frac{\pi }{3} )  = \frac{\sqrt{3} }{2}

                  cos( 3x - \frac{\pi }{3} )  = cos (\frac{\pi }{6} )

                      3x - \frac{\pi }{3}  =  \frac{\pi }{6}

                      3x - \frac{\pi }{3  } + \frac{\pi }{3}   =  \frac{\pi }{6} + \frac{\pi }{3}

                      3x = \frac{2\pi +\pi }{6} = \frac{3\pi }{6} = \frac{\pi }{2}

                     x = \frac{\pi }{6}

<u><em>Step(ii)</em></u>:-

The solution of the given trigonometric equation

                   x = \frac{\pi }{6}

<u><em>verification </em></u>:-

      cos( 3x - \frac{\pi }{3} )  = \frac{\sqrt{3} }{2}

put  x = \frac{\pi }{6}

    cos( 3(\frac{\pi }{6})  - \frac{\pi }{3} )  = \frac{\sqrt{3} }{2}

    cos (\frac{\pi }{6} ) = \frac{\sqrt{3} }{2} \\\\\frac{\sqrt{3} }{2} =  \frac{\sqrt{3} }{2}

Both are equal

∴The solution of the given trigonometric equation

                   x = \frac{\pi }{6}

                     

4 0
2 years ago
4m 8m find the area asap
timama [110]
0.5*4*8=16 metre square
3 0
3 years ago
Read 2 more answers
7th grade math plsssssss help
Aloiza [94]

Answer:

64

Step-by-step explanation:

length(l)=8cm

breadth(b)=2cm

height(h)=4cm

volume=l×b×h

=8cm×2cm×4cm

=64cm³

5 0
3 years ago
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