3 years ago

Hurry plsss Plsssss

Mathematics

1 answer:

svetlana [45]3 years ago

4 0

Answer:

B is the correct answer as it qualifies for all the answers correctly.

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PLEASE HELP!!! ITS ALMOST DUE!!! ILL MARK BRAINLIEST!!

HACTEHA [7]

Answer:

13.7

Step-by-step explanation:

4 0

3 years ago

Verify the identity. cotangent x equals StartFraction 1 plus cosine 2 x Over sine 2 x EndFractioncot x= 1+cos2x sin2x Use the ap

lutik1710 [3]

Answer with Step-by-step explanation:

We are given that

RHS

$\frac{1+Cos2x}{Sin2x}$

We have to verify the identity.

We know that

$1+Cos2x=2Cos^2 x$

$Sin2x=2SinxCos x$

Using the formula

$\frac{2Cos^2x}{2SinxCosx}$

$\frac{Cosx}{Sinx}$

$Cot x$

By using the formula

$Cotx=\frac{Cosx}{Sinx}$

LHS=RHS

Hence, verified

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3 years ago

48 pens are packed in four boxes how many pens are packed in nine boxes

katovenus [111]

Answer:

108 pens

Step-by-step explanation:

48/4=x/9

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x=108

3 0

3 years ago

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Find sin (A-B) if sin A = 4/5 with A between 90 and 180 and if cos B = 3/5 with B between 0 and 90

quester [9]

Answer:

sin(A-B) = 24/25

Step-by-step explanation:

The trig identity for the differnce of angles tells you ...

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

We are given that sin(A) = 4/5 in quadrant II, so cos(A) = -√(1-(4/5)^2) = -3/5.

And we are given that cos(B) = 3/5 in quadrant I, so sin(B) = 4/5.

Then ...

sin(A-B) = (4/5)(3/5) -(4/5)(-3/5) = 12/25 + 12/25 = 24/25

The desired sine is 24/25.

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3 years ago

20 POINTS PLS HELP ASP

svet-max [94.6K]

Answer:

Im thinking it is 50

Step-by-step explanation:

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3 years ago

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