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denpristay [2]
3 years ago
10

Help me to solve this fast ( prove it)

Mathematics
1 answer:
Harrizon [31]3 years ago
7 0

Step-by-step explanation:

sec⁴A + tan⁴A = 1 + (2tan²A/cos²A)

LHS = sec⁴A + tan⁴A

= (sec²A)² + (tan²A)² {using formula of a²+b²)

= (sec²A-tan²A) + 2tan²A.sec²A

= 1 + {2tan²A.(1/cos²A)}

= 1 + (2tan²A/cos²A)

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Alenkasestr [34]

Answer:

1. members = $ 160 , non members = $ 80

2. members = $ 168 , non members = $ 120

Step-by-step explanation:

For members

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For Non members

parking charges = $ 5

admission charges = $ 11

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(1) for 4 visits

Members pay = $ 144 + 4 x $ 4 = $ 160

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So, non member ship is better.    

(2) for 6 visits

Members pay = $ 144 + 6 x $ 4 = $ 168

Non members pay = 6 x $ 11 + 6 x $ 5 + 6 x $ 4 = $ 120

So, non member ship is better.    

6 0
3 years ago
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AveGali [126]

Answer:

18

Step-by-step explanation:

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4 0
3 years ago
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Help!!<br>find the unknown sizes of angles of figure​
Murljashka [212]

Answer:

<h2><u><em>60°</em></u></h2>

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now we know that it is an equilateral triangle, so Y and 2x are 60°

(3 * 60 = 180°)

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or

180 - 60 = 120

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5 0
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