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Pls help me. To be submitted tomorrow​

Pls help me. To be submitted tomorrow​-example-1
User Nick Keets
by
7.6k points

1 Answer

6 votes

Answer:


(1)/(7)

Explanation:

Given

tanx =
(3)/(4) =
(opposite)/(adjacent)

This is a 3- 4- 5 right triangle with hypotenuse = 5, then

cosx =
(adjacent)/(hypotenuse) =
(4)/(5)

sinx =
(opposite)/(hypotenuse) =
(3)/(5)

Then


(cosx-sinx)/(cosx+sinx)

=
((4)/(5)-(3)/(5) )/((4)/(5)+(3)/(5) )

=
((1)/(5) )/((7)/(5) )

=
(1)/(5) ×
(5)/(7)

=
(1)/(7)

User Zhaoqing
by
8.3k points

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