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user100 [1]
2 years ago
9

What's the value of given expression

a1" title=" \sqrt{1 \times 1} " alt=" \sqrt{1 \times 1} " align="absmiddle" class="latex-formula">
​
Mathematics
2 answers:
arsen [322]2 years ago
6 0

Answer:

1

Step-by-step explanation:

1st step : multiple the number inside square root

1 x 1 =1

so then think about which time 1 will give you 1

that will 1

Semenov [28]2 years ago
5 0

Answer:

√{1×1}=√1=±1 is your answer

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Find the cos A and tan B to four decimal places. URGENT
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cos A is 0.8511 and tan B is 1.6

Step-by-step explanation:

Find the 3rd length or the hypotenuse.

<u>Pythagoras theorem</u>

hypotenuse^{2} = adjacent^{2} + opposite^{2}

hypotenuse^{2} = 8^{2} + 5^{2}

hypotenuse^{2} = 64 + 25

hypotenuse = \sqrt{89}

hypotenuse = 9.4

a) Cos A

<u>Data:</u>

Adjacent = 8

Hypotenuse = 9.4

<u>Formula:</u>

Cos (Angle) = \frac{adjacent}{hypotenuse}

Cos A =  \frac{8}{9.4}

Cos A = 0.8511

A = cos^{-1} (0.8511)

A = 31.7°

b) Tan B

<u>Data: </u>

Opposite = 8

Adjacent = 5

<u>Formula:</u>

Tan (Angle) = \frac{opposite}{adjacent}

Tan B = \frac{8}{5}

Tan B = 1.6

B =  cos^{-1} (1.6)

B = 58°

Therefore, cos A is 0.8511 and tan B is 1.6.

Keyword: cos, tan

Learn more about cos at

  • brainly.com/question/5013374
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3 years ago
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Step-by-step explanation:

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WHAT IS X^2+3X-10=0 IN SIMPLEST RADICAL FORM
AleksandrR [38]
                  x² + 3x - 10 = 0
                                  x = -(3) ± √((3)² - 4(1)(-10))
                                                      2(1)
                                  x = -3 ± √(9 + 40)
                                                 2
                                  x = -3 ± √(49)
                                               2
                                  x = -3 ± 7
                                            2
                                  x = -3 + 7    U    x = -3 - 7
                                            2                       2
                                  x = 4    U    x = -10
                                        2                   2
                                  x = 2    U    x = -5

Solution Set: {2, -5}
7 0
3 years ago
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