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dlinn [17]
2 years ago
11

Simplify as far as possible.13cos (180° + x)sin (360° - X)sin (360° + x)cos (180° - x)​

Mathematics
1 answer:
KengaRu [80]2 years ago
6 0

Answer:

See below

Step-by-step explanation:

cos (180 + x) = - cos x

sin (360 + x) = sin x

sin 360 - x) = -sin x

cos (180 - x) = - cos x

3cos (180° + x)sin (360° - X) = -3cos x (- sin x) = 3 cosx sinx

sin (360° + x)cos (180° - x)​ = sin x (- cos x) = -sinx cosx

3cos (180° + x)sin (360° - X)sin (360° + x)cos (180° - x)​

= 3 cosx sinx (-sinx cosx) = -3 (sin x)^2 (cos x)^2

I am not sure what the question really is, but hopefully the above can steer you in the right direction.

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If a triangle has side lengths 27, 79, and 84 is it a right triangle
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Answer:

Nope

Step-by-step explanation:

A right triangle must have a 90 degree angle.

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Which answer correctly estimates the quotient of 8.39 ÷ 1.22? A. about 70 B. about 7 C. about 0.7 D. about 0.07
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a ticket office sold 553 tickets one day. the receipts totaled $3936. how many $9 adult tickets and how many $6 child tickets we
Vsevolod [243]

This is the assumption method ;)

Take all tickets to be adult tickets

$9 x 553 = $4977

Then..... $4977 - $3936 = $1041

The difference between the child and adult ticket is $3, so divide $1041 by $3

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347 x $6 = $2082

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6 0
3 years ago
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PLEASE HELP ME OUT FASTTTTT
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Answer:

1 more slice

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6 0
2 years ago
A garden is designed in the shape of a rhombus formed from 4 identical 30°-60°-90° triangles. The shorter distance across the mi
EleoNora [17]

Answer:

c) 120 ft

Step-by-step explanation:

Let's consider the rhombus has 4 sides, A, B, C, and D.

To find the length of each side, let's first find the length AE.

From the diagram, AE is half of AC and AC = 30 ft.

Therefore,

AE = ½ * 30

AE = 15 ft

Let's find the length AD, since we are looking for the distance around the perimeter.

AD = \frac{15}{sin30} = \frac{15}{0.5} = 30 ft

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Therefore the distance around the perimeter would be: AD+AD+AD+AD=

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The distance around the perimeter of the garden is 120 ft

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