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Gemiola [76]
3 years ago
13

What is 7 1/2 - 3 4/41

Mathematics
2 answers:
Radda [10]3 years ago
7 0
The LCD of 2 and 41 is 82  so we write 1/2 as 41/82:-

7  41/82 - 3 8/82

= 4  33/82  Answer
nignag [31]3 years ago
6 0
7x2+1 is 15/2. 3x41+1 is 124/41
The LCF is 82 so you would multiply everything by 82
1230/2-10,168/41
615-248=367 I might be wrong tho
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Sholpan [36]
Tanθ + cotθ = 1/sinθcos<span>θ

since we know that;

tan</span>θ = sinθ/cos<span>θ, and

cot</span>θ = cosθ/sin<span>θ

now when we add tan</span>θ and cot<span>θ and replace their values;

tan</span>θ + cot<span>θ=sin</span>θ/cosθ + cosθ/sin<span>θ

</span>For a common denominator to add those two fractions, the obvious choice is sinθ.cosθ , so

tanθ + cotθ = sin²θ/sinθcosθ + cos²θ/sinθcosθ =sin²θ + cos²θ / sinθcosθ

now we can use the identity that;

sin²θ + cos²θ = 1

So,

tanθ + cotθ = 1/sinθcosθ

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