Sunday

December 21, 2014

December 21, 2014

Posted by **Linds** on Wednesday, October 25, 2006 at 9:45pm.

example: sin-1(-1/2)

how do you figure this out?

The sin^-1 means the arcSin, or the angle whose sine is ...

so sin^-1(1/2) is the angle whose sine is -.5, which is -30 degrees.

In your calculator, put in -.5, then press INV sin.

so as my answer do i put pi/6?

That is the answer in radians. It should be negative. There is an angle in the third quadrant that yields a sine of -1/2 also.

**Answer this Question**

**Related Questions**

math - Eliminate the parameter (What does that mean?) and write a rectangular ...

math - Can anyone help w/ these. 1) Solve the equation in the internal [0deg, ...

trig - Reduce the following to the sine or cosine of one angle: (i) sin145*cos75...

Math - If y = sin−1 x, then sin y = x,−π/2 ≤ y ≤ &#...

MATH - 1.)Find the exact solution algebriacally, if possible: (PLEASE SHOW ALL ...

Trigonometry - ABC is a non-degenerate triangle such that 2\sin \angle B \cdot \...

maths - Choose the two options which are true for all values of x 1) cos (x) = ...

Inverse trigonometric function - How to solve without calculator 1. sin(arctan(...

Trig - sin(2 tan-1 7/24) (that is inverse tangent) Draw a 7 24 25 right triangle...

Math - write the expression as a function of an acute angle whose measure is ...