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d1i1m1o1n [39]
3 years ago
10

Which of the following is a trigonometric identity?

Mathematics
2 answers:
marin [14]3 years ago
8 0

Answer:

third one

I'm assuming does 2's are squared symbols.

Step-by-step explanation:

It's the third one because

sin^2 x sec^2 x

sin^2 x (1/cos^2 x) by reciprocal identity

sin^2 x/cos^2 x by multiplicative identity prop

tan^2 x by quotient identity

The first one wouldn't work because plugging in pi/4 gives 1+1=1 which isn't true.

The second one doesn't work because plugging in pi/4 gives 2+2=1 which isn't true.

The last equation doesn't make sense at all. There is no variable on the left and on the right there is an extra variable.

Ad libitum [116K]3 years ago
7 0

Answer:

it's the first one... I think

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Find the value of x
avanturin [10]

Answer:

Step-by-step explanation:

1. 56 + 81 = 137

2. The exterior angle theorem means that the 2 angles within a triangle that is on the opposite side of the angle outside the triangle could be added to find the angle that is outside of the triangle.

3. 56 and 81 are on the opposite side of the "x" outside the triangle which means that they could be added together which equals 137 degrees.

Hope this helps!

3 0
3 years ago
Read 2 more answers
The circle shown is centered at the origin and contains the point (-4, -2). What is the length of the diameter of the circle? Ro
trasher [3.6K]

Step-by-step explanation:

Equation for circle centered at origin:

x² + y² = r².

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8 0
3 years ago
When using Cramer's Rule to solve a system of equations, if the determinant of the coefficient matrix equals zero and neither nu
o-na [289]
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x + y = 3 and <span>2x + 2y = 6
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<span>| 1 1 | </span>
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the numerator determinants would be
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3 years ago
Round off to the nearest <br> 3,142
Bezzdna [24]
Just put 3.150 lol that what I did
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3 years ago
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6 0
3 years ago
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