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gregori [183]
3 years ago
11

Which function is equivalent to y= -cot(x)?

Mathematics
2 answers:
erastova [34]3 years ago
7 0
We know that
tan (A+B)=sin (A+B)/cos (A+B)
sin (A+B)=sin A*cos B+sin B*cos A
cos (A+B)=cos A*cos B-sin A*sin B
so
for (x+pi/2)
A=x
B=pi/2
sin A=sin x
sin B=1
cos A=cos x
cos B=0
sin (A+B)=sin x*0+1*cos x------> cos x
cos (A+B)=cos x*0-sin x*1------> -sin x
tan (x+pi/2)=cos x/(-sin x)------> -cot x

the answer is the option
D. y= tan (x+pi/2)
vitfil [10]3 years ago
7 0

Answer:

D. y = tan(x + pi/2)

Step-by-step explanation:

this is the correct answer on ed-genuity, hope this helps! :)

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Step-by-step explanation:

By linear pair property

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7 0
2 years ago
In fig. AB = AC, D is the midpoint of BC.<br><br> (i)Is  ADB ADC (ii) Is ∠B =∠C?
dexar [7]

Answer:

(i) Yes

(ii) Yes

Step-by-step explanation:

We are given that

AB=AC

(i)D is the mid-point of BC

BD=DC

In triangle ADB and triangle ADC

AD=AD

Reason: Reflexive property

BD=DC

Reason:Given

AB=AC

Reason: Given

\triangleADB\cong\triangleADC

Reason:SSS postulate

Yes, triangle ADB is congruent to triangle ADC

(ii) Angle B=Angle C

Reason: CPCT

Yes , angle B=angle C

3 0
3 years ago
Please help with this magic square
IrinaVladis [17]

Answer:

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Step-by-step explanation:

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3 0
3 years ago
Point I is on line segment HJ. Given I J equals 3X +3, HI equals 3X-1, and HJ equals 3X +8, determine the numerical length of HJ
Nezavi [6.7K]

Answer:

Step-by-step explanation:

3x + 3 + 3x - 1 = 3x + 8

6x + 2 = 3x + 8

3x + 2 = 8

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4 0
2 years ago
Read 2 more answers
What is 2+2+2-2+4-8?
bogdanovich [222]

Answer:

Answer- 0

Step-by-step explanation:

2+2+2-2+4-8= 4-2+4-8=0

hope this helps :)

3 0
2 years ago
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