Monday, January 26, 2015

Find the values of sinx, tanx, secx, and cscx if cosx = 0.23

Given cos(x) = 0.23


We need
to find sin(x), tan(x) , sec(x), and (csc(x).


First, we
know that sec(x) = 1/cos(x).


==> sec(x) = 1/(0.23) =
4.3478.


==> sec(x) =
4.3478.


Now we will use the trigonometric
identities to find sin(x).


We know
that:


sin^2 x + cos^2 x =
1


==> sin(x) =
sqrt(1-cos^2x)


                =
sqrt(1-0.23^2)


                =
sqrt(0.9471)


                 =
0.9732


==> sin(x) =
0.9732.


Now we know that csc(x) =
1/sin(x)


==> csc(x) = 1/(0.9732) =
1.0275


==> csc(x) =
1.0275


Now we know that tan(x) = sin(x)/
cos(x).


==> tan(x) = 0.9732/ 0.23 =
4.2313


==> tan(x) =
4.2313

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