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zubka84 [21]
3 years ago
6

Prove this qns plzz ​

Mathematics
2 answers:
Triss [41]3 years ago
7 0

answer is in a picture have a look

artcher [175]3 years ago
6 0

Answer:

L.H.S.

= (cos5a.sin2a-cos4a.sin3a)/ (sin5a.sin2a-cos4a.cos3a)

Multiply numerator and denominator by 2.

= 2(cos5a.sin2a - cos4a.sin3a) / 2(sin5a.sin2a - cos4a.cos3a)

= (2cos5a.sin2a - 2cos4a.sin3a)/

(2sin5a.sin2a - 2cos4a.cos3a) = [sin(5a+2a)-sin(5a-2a)-sin(4a+3a)

+sin(4a-3a)]/[cos(5a-2a)-cos(5a+2a)-sin(4a-3a) +cos(4a+3a)]

= (sina - sin3a)/(cso3a-cosa)

= (-2cos2a.sina)/(-2sin2a.sina)

= cos2a/sin2a

= cot2a

= R.H.S.

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weeeeeb [17]
Hey there,
3.5 L = 3.5 x 1000
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The second bottle has more water than the first bottle,
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4 0
3 years ago
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A movers ramp is placed on top
Salsk061 [2.6K]

Answer:

I think it would be 13 feet

Step-by-step explanation:

12*5=60

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4 0
3 years ago
Monica has $20. She needs to buy a gallon of milk that costs $2.50. She also wants to buy yogurt, which costs $1.20 a cup. What
Kitty [74]

We are given : Cost of a gallon of milk = $2.50.

Cost of a cup of yogurt = $1.20.

Total money Monica has = $20.

Number of cups of yogurt Monica can buy = x.

And inequality made is also correct

1.20x + 2.5 ≤ 20.

Now, we need to solve it for x.

Subtracting 2.5 from both sides, we get

1.20x + 2.5 -2.5 ≤ 20 - 2.5.

1.20x ≤ 17.5

Dividing both sides by 1.20, we get

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x ≤ 14.5833...

Because it's less than 15, so final answer is : 14 is  greatest number of cups of yogurt Monica can buy.



3 0
3 years ago
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Which of the following is equivalent to √-90?<br> A. -3i√10<br> B. 3i√10<br> C. 9i√10<br> D. 9√-10
erastova [34]
The answer to this question is B.  I hope this helps
7 0
3 years ago
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Help please!! Solve for y.
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Answer:

y = 3\sqrt{7}

Step-by-step explanation:

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y = \sqrt{63} = 3\sqrt{7}

7 0
2 years ago
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