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mina [271]
3 years ago
7

In how many ways we can test wether ratios from a proportion ?

Mathematics
1 answer:
Sphinxa [80]3 years ago
5 0
From what I learnt so far, there are 3 possible ways of finding whether ratios form a proportion
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Step-by-step explanation:

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3 years ago
A ramp leading into a building makes a 15° angle with the ground. The end of the ramp is 10 feet from the base of the building.
Paul [167]

Answer:

10.4feet

Step-by-step explanation:

The set up wil form a right triangle

Length of the ramp is the hypotenuse

The length of the end of the ramp from the base= 10 feet (adjacent)

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Required

Length of the ramp

Using SOH CAH TOA

Cos  theta = adj/hyp

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3 0
3 years ago
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Mark deposits $12000 into an account that pays 4% interest, compounded annually, for 5 years. Saul deposits $10000 into an accou
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Answer:

mark=$2400 &Saul=$4800

Step-by-step explanation:

For mark:

p=$12000

r=4%

t=5 years

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12000*4*5/100= 2400

For Saul:

p=$10000

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Prove, cotx -tanx= 2 cot2x
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Step-by-step explanation:

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<em>L.H.S</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>cosx</em><em>/</em><em>sinx-</em><em> </em><em>sinx</em><em>/</em><em>cosx</em><em> </em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>(</em><em>cos</em><em>²</em><em>x-</em><em> </em><em>sin</em><em>²</em><em>x</em><em>)</em><em>/</em><em> </em><em>sinxcosx</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>[</em><em> </em><em>cos</em><em>²</em><em>x-</em><em>(</em><em>1</em><em>-cos</em><em>²</em><em>x</em><em>)</em><em>]</em><em>/</em><em>sinxcosx</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>(</em><em> </em><em>2cos</em><em>²</em><em>x-1</em><em>)</em><em>/</em><em>sinxcosx</em>

<em> </em><em> </em><em> </em><em>2cosx</em><em>/</em><em> </em><em>2sinxcosx</em>

<em> </em><em> </em><em> </em><em>2cot2x</em>

4 0
3 years ago
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