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Effectus [21]
3 years ago
14

Tan2 x + sec2x= 1 for all values of x true or false

Mathematics
2 answers:
NeX [460]3 years ago
8 0
It’s false. You cannot prove it because it is not an identity
Rama09 [41]3 years ago
5 0

Answer:

true

Step-by-step explanation:

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6 0
3 years ago
the sum of two numbers is-5.When twice the first number is added to the second number the result is -2,find the two numbers
juin [17]

Answer:

Step-by-step explanation:

First write the question as an equation

x+y = -5

2x+y = -2

From the given equations, we can create a third one.

x+y+2x+y = -7 or 3x+2y = -7

Use trial and error method for the possible values x and y

We know that at least one of these two have to be negative.

x can be 1, in which case y has to be 5.

Check this for

x+y ≠ -5

x can be -1

Try another one where x = -1 and y has to equal -2

Check this

X

x+y = -5

but,

2x+y ≠ -2

Another one,

8 0
2 years ago
Read 2 more answers
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