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Radda [10]
4 years ago
9

Find A to the nearest degree if cos A = 0.7660

Mathematics
1 answer:
STALIN [3.7K]4 years ago
5 0

Answer:

A = 40^\circ

Step-by-step explanation:

Use the inverse cosine function.

\cos A = 0.7660

A = \cos^{-1} 0.7660

A = 40^\circ

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Aloiza [94]

A rational number that is between 5 and 6 on the number line is 11/2.

An irrational number that is between 5 and 6 on the number line \sqrt{-32}.

<h3>
What is rational number?</h3>
  • Rational Numbers: Any number that can be written as a ratio (or fraction) of two integers is a rational number
  • In mathematics, a rational number is a number that can be expressed as the quotient or fraction p/q of two integers.
  • A numerator p and a non-zero denominator.
  • For example, is a rational number just like any integer (e.g. 5 = the set of all rational numbers, also called "rational numbers", the field of rational numbers, or the field of rational numbers is usually , printed in bold
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8 0
1 year ago
Quadratic equations Please Help Me!!!!!!
igor_vitrenko [27]

The roots are 1 +√7 and 1 -√7.

<h3>What is Quadratic equation?</h3>

A quadratic equation in the variable x is an equation of the form ax² + bx + c= 0, where a, b, c are real numbers, a≠0

Given equation:

y= x²+2x-6

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Half the coefficient of x and add and subtract the square of (b/2)

y= x²+2x-6+(1)²-(1)²

y= x²+2x+(1)² -6 -(1)²

y= (x+1)² -7

Now, equate y=0

(x+1)² -7 =0

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vlabodo [156]
(x+1)²+(y+1)²=9

the answer can be found with 
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where the point (h,k) is the center.
7 0
4 years ago
In a right triangle, if the length of the hypotenuse is 39 and the length of one of the other sides is 15, what is the length of
Inessa [10]

Answer:

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8 0
4 years ago
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kkurt [141]

Answer:

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