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Naddika [18.5K]
3 years ago
15

Sin(2x+30°)=1 Tìm x Cảm ơn vì giúp đỡ

Mathematics
1 answer:
Pie3 years ago
4 0

Answer:

Step-by-step explanation:

This question is asking us to find where sin(2x + 30) has a sin of 1. If you look at the unit circle, 90 degrees has a sin of 1. Mathematically, it will be solved like this (begin by taking the inverse sin of both sides):

sin^{-1}[sin(2x+30)]=sin^{-1}(1)

On the left, the inverse sin "undoes" or cancels the sin, leaving us with

2x + 30 = sin⁻¹(1)

The right side is asking us what angle has a sin of 1, which is 90. Sub that into the right side:

2x + 30 = 90 and

2x = 60 so

x = 30

You're welcome!

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AURORKA [14]
Emma completed the problem correctly i believe
5 0
3 years ago
If one of the short sides of a 45-45-90 triangle equals 5, how long is the hypotenuse?
Alla [95]

Answer:

hypotenuse= 2\sqrt{5}

Step-by-step explanation:

the triangle is equal tow side so it is two side =5 cm

then the hypotenuse by Phitagors theory the triangle hypotenuse =

\sqrt{5^{2} +5^{2} } = 2\sqrt{5}

5 0
3 years ago
Find the measure of the 3rd angle of a triangle given that the first 2 angles are 44 and 72 degrees
MArishka [77]
<span>3rd angle of a triangle = 180 -(44 + 72) = 180 - 116 = 64

answer
</span><span>3rd angle of a triangle = 64 degrees</span>
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3 years ago
Please help<br><br>problem 1, 2 and 3​
laila [671]

Answer:

See attached

Step-by-step explanation:

When there is a lot of repetitive calculation to do, I like to let a spreadsheet or graphing calculator do it. The attached shows a spreadsheet that computes all the values you're asked to find.

For a linear equation in standard form, ax +by = c

  • the x-intercept is: c/a
  • the y-intercept is: c/b
  • the slope is: m = -a/b

Of course, the slope-intercept form of the equation is ...

  y = (slope)·x + (y-intercept)

and the values of the various points on the graph can be computed from that equation.

___

You will note that the last two equations describe the same line.

_____

<em>Note on spreadsheet formulas</em>

When you put the formulas into the spreadsheet, make sure to fix the column number or row number of the values you're computing, as appropriate. For example, the y-values in the different columns always use the slope from the slope column (fixed), the y-intercept from that column (fixed), and the x-value from the top row (fixed). If you make the cell references relative instead of fixed, you will get wrong answers.

4 0
2 years ago
The product of this number and 10 is equal to the square of this number
Rama09 [41]

Answer:

___ x 10 = ____^2

Step-by-step explanation:

7 0
3 years ago
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