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Illusion [34]
3 years ago
7

Sin^2x/cos^2 + sinxcscx = sec^2x Identify it, please explain so I know how you did it, thanks

Mathematics
1 answer:
max2010maxim [7]3 years ago
6 0

\frac{sin^2x}{cos^2x} + sin x *cscx\\ tan^2x + \frac{sin x}{sin x} \\ tan^2x + 1\\ sec^2x

\frac{sin^2x}{cos^2x} = tan^2x

csc x = \frac{1}{sinx}

tan^2x + 1 = sec^2x

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The base and the height of a rectangle are represented by the expressions below.
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The length of the base is 27 and the length of the height is 17.

To find the answer, you need to add up each side twice and set it equal to 88.

x-6+x-6+x+4+x+4=88

That is equal to: 4x - 4 = 88

Add 4 to both sides: 4x = 92

Divide by 4: x = 23

Now plug 23 in for x:

Base: 23 + 4 = 27
Height: 23-6=17
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Step-by-step explanation:

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3 years ago
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nikdorinn [45]
A is one correct answer
8 0
3 years ago
M is the midpoint of XY. XM=10w+2 and MY=5w+22<br> WHAT IS XY??
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Answer:

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Step-by-step explanation:

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Which of the triangles below is not a right triangle?
Nataly [62]

Answer:

B)\ 6ft,8ft,12ft

Step-by-step explanation:

Pythagorean Theorem : In a right triangle, square of hypotenuse is equal to the sum of the squares of the other sides.

(A)\ 3cm,4cm,5cm\\5^2=25\\3^2+4^2=9+16=25\\5^2=3^2+4^2

Hence these sides represent a right triangle.

 

(B)\6ft.8ft,12ft\\12^2=144\\6^2+8^2=36+64=100\\12^2\not=6^2+8^2

Hence this does not represent a right triangle.

(C)\27cm,36cm,45cm\\45^2=2025\\27^2+36^2=729+1296=2025\\45^2=27^2+36^2

This represents a right triangle.

8 0
3 years ago
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