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nydimaria [60]
3 years ago
15

Find the values of the six trigonometric functions of an angle in standard position if the point with coordinates (6,-5) lies on

its terminal side.

Mathematics
2 answers:
puteri [66]3 years ago
8 0

Answer:

Given : The point with coordinates (6,-5) lies on its terminal side.

To find :  The values of the six trigonometric functions of an angle in standard position

Solution :

The coordinates (6,-5) lies in the 4 quadrant.

Refer the attached figure.

where x=6 is the base

y= -5 is the perpendicular

Applying Pythagoras theorem,

H^2=P^2+B^2

H^2=(-5)^2+6^2

H^2=25+36

H=\sqrt{61}

Now, finding trigonometric function

Note - In fourth quadrant only cos and sec is positive rest are negative.

1 )  \sin x= - \frac{P}{H}

\sin x= - \frac{-5}{\sqrt{61}}

\sin x= \frac{5}{\sqrt{61}}

2) \csc x=\frac{1}{\sin x}

\csc x=\frac{1}{\frac{5}{\sqrt{61}}}

\csc x=\frac{\sqrt{61}}{5}

3) \cos x= \frac{B}{H}

\cos x=\frac{6}{\sqrt{61}}

4) \sec x=\frac{1}{\cos x}

\sec x=\frac{1}{\frac{6}{\sqrt{61}}}

\sec x=\frac{\sqrt{61}}{6}

5) \tan x= - \frac{P}{B}

\tan x= - \frac{-5}{6}

\tan x= \frac{5}{6}

6) \cot x=\frac{1}{\tan x}

\cot x=\frac{1}{\frac{5}{6}}

\cot x=\frac{6}{5}

Mariana [72]3 years ago
5 0
This is an angle in the 4th quadrant
tan 0f this angle = opp/adj = -5/6
cotangent = 1/tan = -6/5

length of hypotenuse  = sqrt (6^2 + (-5)^2 ) =  sqrt 61

so sine = -5/sqrt61
and cosec = 1/sin =  -aqrt61/5

and cosine = 6/sqrt61
and secant = 1 / cos =  sqrt61 /6
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