Question

what is the sine of −3 radians?

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Answer 1

−3 is less than 0 so let us add 2π radians

−3 + 2π = −3 + 6.283... = 3.283... radians

sin(−3) = sin(3.283...) = −0.141 (to 3 decimal places)

Answer 2

Answer:

Step-by-step explanation:

Given that ,

To find the sign of -3 radian .

Now the sign of -3 radian is $-3^{c}$.

The relation between Radian and Degree-

We know that a complete circle subtends at its centre an angle whose measure is 2π radians as well as 360°.

∴ $(2\pi) ^{c}$ = 360 °

Hence , $\pi ^{c}$ = 180°

In 1 radian = 57°16'21''

So, -3 radian = (-3) × 57°16'21''

                     = ( -171°49'03''  )

Measuring Angles-

Mainly there are two system of measuring angles.

(i) Sexagesimal System ( Degree Measure )

(ii) Radian Measure

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