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miss Akunina [59]
3 years ago
8

Please write your answer below !!!

Mathematics
1 answer:
Paladinen [302]3 years ago
6 0
A.) We know, sum of the complimentary angles is equal to 90.
So, Equation: 15 + x = 90

B.) Solving: 15 + x = 90
x = 90 - 15
x = 75

In short, Your Answer would be 75

Hope this helps!
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Solve for y: x + 5y - 10=22​
cestrela7 [59]

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Step-by-step explanation:

7 0
3 years ago
 Find sin2x, cos2x, and tan2x if sinx=-15/17 and x terminates in quadrant III
vodka [1.7K]

Given:

\sin x=-\dfrac{15}{17}

x lies in the III quadrant.

To find:

The values of \sin 2x, \cos 2x, \tan 2x.

Solution:

It is given that x lies in the III quadrant. It means only tan and cot are positive and others  are negative.

We know that,

\sin^2 x+\cos^2 x=1

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Now,

\sin 2x=2\sin x\cos x

\sin 2x=2\times (-\dfrac{15}{17})\times (-\dfrac{8}{17})

\sin 2x=-\dfrac{240}{289}

And,

\cos 2x=1-2\sin^2x

\cos 2x=1-2(-\dfrac{15}{17})^2

\cos 2x=1-2(\dfrac{225}{289})

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\cos 2x=-\dfrac{161}{289}

We know that,

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\tan 2x=\dfrac{-\dfrac{240}{289}}{-\dfrac{161}{289}}

\tan 2x=\dfrac{240}{161}

Therefore, the required values are \sin 2x=-\dfrac{240}{289},\cos 2x=-\dfrac{161}{289},\tan 2x=\dfrac{240}{161}.

7 0
2 years ago
(-6.9), (7, -9) find the slope
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Answer:

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Step-by-step explanation:

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