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Answer:

A person sells a table at a profit of 10%. If he had bought the table at 5% less cost and sold for Rs. 80 more, he would have gained 20%. The cost price of table is.

Explanation:

Same here!

Answer:

cos A = 2/5

4+4tan *tanA

4+4tan²A

cos A = 2/5

1/sec A = 2/5

sec A = 5/2

4 + 4 tan²A

4( 1 + tan²A)

4 ( sec²A)

4(5/2)²

4 * 25 /4

= 25

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