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2 years ago

Cot x sec4x = coy x + 2 tan x + tan3x

Mathematics

1 answer:

Fantom [35]2 years ago

7 0

Answer:

Step-by-step explanation:

Simplify RHS

Cotx +2tanx+tan^3x

Cotx/sinx+2(sinx/cosx)+sin^3x/cos^3x

Taking LCM

(cos^4x+2sin^2xcos^2x+sin^4x)/sinx cos^3x

(Cos^2x+sin^2x)^2/sinx cos^3x

(1/sinx cos^3x)

(1/sinx cos^3x)*(cosx/cosx)

Cotx sec^4x

LHS=RHS

Hence proved

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Answer:

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2 years ago

What is 1 standard deviation on a

PilotLPTM [1.2K]

Answer:

D. The distance from the mean to an inflection point

Step-by-step explanation:

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$p(x)=\dfrac{1}{\sqrt{2\pi}}e^{-\dfrac{x^2}{2}}$

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So, one standard deviation is the distance from the mean to an inflection point.

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2 years ago

Compare the values 4x107 is what times as much as 4x103

dezoksy [38]

Answer:

$10^{4}$

Step-by-step explanation:

4 x 10^7 is 40000000

4 x 10^3 is 4000

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So we will work backwards to find the answer,

If you divide 40000000 by 4000 you will get 10000

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2 years ago

Read 2 more answers

Help please! need it asap

kap26 [50]

Answer:

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Step-by-step explanation:

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2 years ago

Who started the problem correctly? The problem form is (-5) - (-1 3/4).

Veronika [31]

Answer:

Shane started the problem correctly

Step-by-step explanation:

We are given problem (-5) - (-1 3/4).

Mariah started the problem as (-5) + 1 - 3/4

Shane started the problem as (-5) + 1 + 3/4

We need to find who started the problem correctly.

The problem should be started by converting the mixed fraction into improper fraction i,e

$-5-(-1\frac{3}{4})\\=-5-(-1-\frac{3}{4} )\\=-5-(-\frac{7}{4})$

Now we will solve bracket by multiplying -1 with term inside the bracket i.e

$=-5+\frac{7}{4}$

$= \frac{-13}{4}$

Let's compare both the procedures now:

Mariah:

$(-5) + 1 - \frac{3}{4}$

$=(-5) - \frac{1}{4}$

$=\frac{-21}{4}$

Therefore, Mariah did not start the problem correctly.

Shane:

$(-5) + 1 + \frac{3}{4}$

$= -5 + \frac{7}{4}$

$= \frac{-13}{4}$

Therefore, Shane started the problem correctly.

6 0

2 years ago