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lisabon 2012 [21]
3 years ago
7

Cot^2x-csc^2x=-1 for all values of x true or falsse

Mathematics
2 answers:
Leno4ka [110]3 years ago
4 0
Our basis for this equality is the pythagorean theorems of trigonometry. There are three equations for the pythagorean theorems. These are:

sin²x + cos²x =1
1 + tan²x = sec² x
1 + cot² x = csc² x

These are all derived from circle geometry on the cartesian plane. Now, the useful trigonometric property to be used is the third one. Rearranging this, we come up with

cot²x - csc²x = -1

This coincided with the given equation. Therefore, this is true. This is because it is already established from the pythagorean theorems.
Korolek [52]3 years ago
3 0

Answer: True Apex

Step-by-step explanation:

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A

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Which is the correct algebraic representation of the transformation displayed on the graph?
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A triangle has side lengths of 39, 80, and<br> 87. Is this triangle a right triangle?
iren2701 [21]

Answer:

Step-by-step explanation:

39²=1521

80²=6400

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87²=7569

7921≠7569

so it is not aright angled triangle.

4 0
2 years ago
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Please Help practice #3
algol [13]

Answer:

(2x+5)(4x+3)

Step-by-step explanation:

Given the expression 8x^2 + 26x + 15

Factorize

8x^2 + 26x + 15

= 8x^2 + 6x + 20x + 15

= 2x(4x+3) + 5 (4x+3)

= (2x+5)(4x+3)

Hence the factored form of the expression is (2x+5)(4x+3)

5 0
3 years ago
If anyone is good at grade 8 math problems pls help answer these questions thanks!! :DD
wolverine [178]

Answer:

53 Meters.

Step-by-step explanation:

34*34 + 41*41 = 2837.

1156 + 1681 = 2837.

The square root of 2837 would be your answer.

34*34 + 41*41 = 53.26349 * 53.26349

a*a + b*b = c*c.

a² + b² = c².

5 0
1 year ago
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