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zlopas [31]
3 years ago
10

Cos(-170°) = _____ -cos10° cos10° cos(-10°)

Mathematics
1 answer:
Lera25 [3.4K]3 years ago
7 0

Answer:

<h3>-cos10°</h3>

Step-by-step explanation:

cos is positive at first and fourth quadrant

so, cos (-x) = cos (x)

also, cos(180-x) = -cos x

        cos (180+x) = -cos x

cos (-170°) = cos (170°)

cos(170°) = cos (180° - 10°)

              =  - cos 10°

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Pls help with this problem
RoseWind [281]
<h3>Answer:  26 cm</h3>

====================================================

Explanation:

Refer to the diagram below. The rectangle MATH has the diagonal MT that cuts the rectangle into two identical right triangles.

We then use the pythagorean theorem to find the length of the hypotenuse MT.

a^2 + b^2 = c^2

10^2 + 24^2 = c^2

100 + 576 = c^2

676 = c^2

c^2 = 676

c = sqrt(676)

c = 26

Segment MT is 26 cm long.

This applies to the other diagonal AH as well.

5 0
3 years ago
Solve. Explain the answer step-by-step.
kozerog [31]
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8 0
2 years ago
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The function v(t) 1350(1.017)t represents the value v(t), in dollars, of a comic book t years after its purchase. the yearly rat
Vikentia [17]

Answer:

The yearly rate of appreciation of the comic book is r=0.017 or r=1.7%

Step-by-step explanation:

we have

v(t)=1,350(1.017)^{x}

This is a exponential function of the form

f(x)=a(b)^{x}

where

a is the initial value

b is the base

In this problem

a=$1,350

b=1.017

Remember that

b=1+r

so

1+r=1.017

r=1.017-1=0.017

therefore

The yearly rate of appreciation of the comic book is r=0.017 or r=1.7%

6 0
3 years ago
The distributive property can be applied to which expression to factor 12x3 – 9x2 + 4x – 3?
jeka94
<span>(3x2 + 1) • (4x - 3) is the answer</span>
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4 years ago
Solve for w.<br> 5W + 9z = 2z + 3W<br> What is the answer
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Answer:

−7z/2

Step-by-step explanation:

8 0
3 years ago
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