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3 years ago

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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3 years ago

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choli [55]

Given parameters:

Cost price of the article = Nu.28.30

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Unknown:

Gain percentage = ?

The gain percentage is the same as the percentage profit on a trade.

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Gain percentage = $\frac{Profit}{Cost price} x 100$

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4 years ago

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gregori [183]

<span>Each ticket costs $10. He bought "x" tickets. Ticket cost = 10*x
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Step-by-step explanation:

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Step-by-step explanation:

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