3 years ago

Verify the identity. cos quanity x plus pi divided by two = -sin x

Mathematics

1 answer:

7nadin3 [17]3 years ago

4 0

Answer:

see below

Step-by-step explanation:

cos ( x+pi/2) = -sinx

We know that

cos(A + B) = cos A cos B - sin A sin B

Let x = A and pi/2 = B

cos x cos pi/2 - sin x sin pi/2 = -sin x

We know cos pi/2 = 0 and sin pi/2 = 1

cos x * 0 - sin x *1 = -sin x

- sin x = - sin x

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The indoor climbing gym is a popular field trip destination. This year the senior class at High School A and the senior class at

Tamiku [17]

Answer:

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Step-by-step explanation:

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3 years ago

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Ainat [17]

100/x=60/30 so x=100*30/60=50

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3 years ago

from the equation 2x+9+3x+x=_x+_, use numbers 0-9 to find no solutions, one solution, or infinitely many solutions

Karolina [17]

2x + 9 + 3x + x =
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4 years ago

Find the area of a triangle with a base of 10 and a hight of 3

dmitriy555 [2]

A=1/2(b)(h)
which is
A=1/2(10)(3)
which is
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so your area will be 15 units^2

:)

7 0

3 years ago

Graph the image of this figure after a dilation with a scale factor of 2 centered at (2, 2).

kow [346]

Answer:

(-6,6), (0,12), (4,8)

Step-by-step explanation:

To dilate an object, we need to multiply the x and y values by the given scale factor.

In this case the scale factor is 2 --> 2(x, y)

Before-> After dilation

2(-3,3) = (-6,6)

2(0,6) = (0,12)

2(2,4) = (4,8)

Please leave a 'thanks' if this helps!

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4 years ago