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3 years ago

Please help!!! Trigonometry is so complicated to me

Mathematics

1 answer:

Eva8 [605]3 years ago

3 0

Answer:

x = 4

Step-by-step explanation:

Given that sin(13x) = cos(9x+2)

Since sintheta = cos(90 - theta)

hence sin (13x) = cos (90 -13x)

Substitute into the original equation

cos (90 -13x) = cos(9x+2)

90-13x = 9x+2

-13x - 9x = 2 - 90

-22x = -88

x = 88/22

x = 4

Hence the value of x is 4

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Phoenix [80]

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3 years ago

A gift box has the shape of a cube with an edge length of 4.5 in.

BlackZzzverrR [31]

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3 years ago

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Read the problem to choose the correct method, then solve. A farmer buys a tractor for $50,000. If the tractor depreciates 10% p

OlgaM077 [116]

Answer:

The correct option is, Exponential Decay, $23,914.85.

Step-by-step explanation:

A farmer buys a tractor for $50,000.

It is provided that the the tractor depreciates 10% per year.

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$y=a\cdot (1-r\%)^{t}$

Here,

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r = decay rate

t = time

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3 years ago

What is 258/300 as a percent

Step2247 [10]

To transform it into percent we want to have 100 into denominator. The easiest way is divide numerator and denominator by 3 (thats because than it doesnt change the value of fraction), so:
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The square root of a perfect square is not a whole number.

Ipatiy [6.2K]

Hello,

√6.25 =2.5
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3 years ago