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Find sin(2 x ), cos(2 x ), and tan(2 x ) from the given information.

Find sin(2x), cos(2x), and tan(2x) from the given information.

tan(x) = − 1/4 , cos(x) > 0


sin(2x)=

cos(2x)=

tan(2x)=

Top Answer

We have tan( x ) = − 1/4 , cos( x ) > 0; hence, x is in 4th quadrant. Hence, sin(x) =... View the full answer

2 comments
  • 3rd line : cosx= sqrt(1-sin2x)= sqrt(1-1/17)= 4/sqrt(17)
    • ashok592000
    • May 02, 2018 at 1:02am
  • 3rd line : cosx= sqrt(1-sin^2x)= sqrt(1-1/17)= 4/sqrt(17)
    • ashok592000
    • May 02, 2018 at 1:16am

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Other Answers

tan (x) = -¼ To get the angle x, we take cos inverse on both sides Arctan... View the full answer

1 comment
  • can you put it in fractions please
    • asb031
    • May 02, 2018 at 1:14am

sin (2x) = -32/68 cos... View the full answer

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Part a) Sin (2x) = -8/17 Part... View the full answer

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sin(2x) = -8/17... View the full answer

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