There is only one positive integer which is exactly twice the sum of its digits. find this 2 digit number

Mnenie [13.5K]

By using properties for trigonometric functions and trigonometric expressions, we find that the exact value of the sine of the angle 5π/12 radians is $\frac{\sqrt{2+\sqrt{3}}}{2}$ .

<h3>How to find the exact value of a trigonometric expression</h3>

Trigonometric functions are trascendent functions, these are, that cannot be described algebraically. Herein we must utilize trigonometric formulae to calculate the exact value of a trigonometric function:

$\sin \frac{5\pi}{12} = \sqrt{\frac{1 - \cos \frac{5\pi}{6} }{2} }$

$\sin \frac{5\pi}{12} = \sqrt{\frac{1 + \cos \frac{\pi}{6} }{2} }$

$\sin \frac{5\pi}{12} = \sqrt{\frac{1 + \frac{\sqrt{3}}{2} }{2} }$

$\sin \frac{5\pi}{12} = \sqrt{\frac{2+\sqrt{3}}{4} }$

$\sin \frac{5\pi}{12} = \frac{\sqrt{2+\sqrt{3}}}{2}$

By using properties for trigonometric functions and trigonometric expressions, we find that the exact value of the sine of the angle 5π/12 radians is $\frac{\sqrt{2+\sqrt{3}}}{2}$ .

To learn more on trigonometric functions: brainly.com/question/15706158

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7 0

11 months ago

Interesting facts about northeast

konstantin123 [22]

The Northeast is a geographical region of the United States of America bounded to the North by Canada. The Northeast is one of 4 regions defined by the Census Bureau for the collection and analysis of statisitics. Hope that helped!!

6 0

2 years ago

Help me please these are for my finals. ! :(

Degger [83]

Answer:

negitive

Step-by-step explanation:

good luck on finals

4 0

2 years ago

X/-2=-7 evaluate and show work

egoroff_w [7]

Answer:

10x.............

Step-by-step explanation:

or x=10

7 0

2 years ago

Read 2 more answers

Square ABCD has a diagonal of 8 inches long. How many square inches is the area of the shape?

Sunny_sXe [5.5K]

Area A of a square with side length a: A = a².

Pythagoras theorem: a² + b² = c²

2*a² = 8²

A = 8²/2

4 0

2 years ago