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Sedaia [141]
3 years ago
10

I need help trying to answer sin–1 2/3

Mathematics
1 answer:
FinnZ [79.3K]3 years ago
6 0

Answer:

41.81 is the answer rounded to the nearest hundredth.

Step-by-step explanation:

You need to insert inverse sin into your calculator and then put parentheses 2/3. (2/3)

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sergejj [24]

Answer:

In order from left to right: 3.5, 3, 60, 70

8 0
3 years ago
Which relationship in the triangle must be true?
Paul [167]

We'll assume this is an arbitrary triangle ABC.


A) No, the sines of two different angles can be whatever they want


B) sin(B)=cos(90-B)


Yes, that's always true. The "co" in cosine means "complementary" as in the complementary angle, which adds to 90. So the sine of an angle is the cosine of the complementary angle.


C) No, the correct identity is sin(180-B)=sin B. Supplementary angles share the same sine.


D) Just like A, different triangle angles often have different cosines.


Answer: Choice B



7 0
3 years ago
Use the diagram and the following equation to solve for x.
Lemur [1.5K]

Starting with 113+ (2x+5)=180, combine like terms and to get 118+2x=180.  Subtract 180-118, which gives you 62.  Then you have 2x=62.  Divide both sides by 2 to get a final answer of x=31.

8 0
3 years ago
Read 2 more answers
Measure (7x+1) (2x+1)
Gemiola [76]

Smaller angle = 41°

Larger angle = 139°

Step-by-step explanation:

(7x - 1) + (2x + 1) = 180

7x + 2x - 1 + 1 = 180

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x = 20

  • The measure of the smaller angle is

2x + 1

= 2(20) + 1

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<u>= 41°</u>

  • The measure of the larger angle is

7x - 1

= 7(20) - 1

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<u>= 139°</u>

4 0
3 years ago
Read 2 more answers
Add and/or Subtract the following, Simplify Completely
Margaret [11]
First, we need to equalize the denominator. If the denominator multiplies by (x+1), so does the numerator. If the denominator multiplies by (x-1), so does the numerator.
Look into my attachment at the second row.

Second, because the first fraction and the second fraction have the same denominator, you can join them into one fraction.
Look into my attachment at the third row.

Third, simplify the numerator.
Look into my attachment at the fourth to the fifth row

Fourth, simplify the denominator.
Look into my attachment at the sixth to the seventh row.

3 0
3 years ago
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