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ladessa [460]
2 years ago
13

Can anyone help me with math

Mathematics
1 answer:
Iteru [2.4K]2 years ago
8 0

Answer:

B

Step-by-step explanation:

Hope this helps plus happy new year!

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Help please!
Mamont248 [21]

Answer:  see proof below

<u>Step-by-step explanation:</u>

Use the Sum & Difference Identity: cos (A + B) = cos A · cos B - sin A · sin B

Recall the following from Unit Circle: cos (π/2) = 0, sin (π/2) = 1

                                                              cos (π) = -1,   sin (π) = 0    

Use the Quotient Identity:   \tan A=\dfrac{\sin A}{\cos A}

<u>Proof LHS → RHS:</u>

\text{LHS:}\qquad \qquad \dfrac{\cos \bigg(\dfrac{\pi}{2}+x\bigg)}{\cos \bigg(\pi +x\bigg)}

\text{Sum Difference:}\qquad \dfrac{\cos \dfrac{\pi}{2}\cdot \cos x-\sin \dfrac{\pi}{2}\cdot \sin x}{\cos \pi \cdot \cos x-\sin \pi \cdot \sin x}

\text{Unit Circle:}\qquad \qquad \dfrac{0\cdot \cos x-1\cdot \sin x}{-1\cdot \cos x-0\cdot \sin x}

                            =\dfrac{-\sin x}{-\cos x}

Quotient:                 tan x

LHS = RHS \checkmark

7 0
3 years ago
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Please help :) ...........
ad-work [718]
I think the 3rd one idk wait for someone else to answer go compare
5 0
3 years ago
What is the approximate distance between two points with coordinates (3, 5) and (-4, -8)? Round your answer to the nearest hundr
Anika [276]
There is a problem,in order to solve this u need a cordanite bride for them to go on.
3 0
2 years ago
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The box on the left is 8 inches wide and 8 inches tall what is the surface area of the box
TiliK225 [7]

Answer:

384 inches

Step-by-step explanation:

8 x 8 = 64

one face of the box is 64

6 faces of the box would be 384

6 0
3 years ago
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The angle 118 degrees is also equal to
LekaFEV [45]
I don't understand your question
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