Sunday

March 1, 2015

March 1, 2015

Posted by **Sejul** on Wednesday, March 30, 2011 at 8:42pm.

is sin 3beta equal to -1?

a) 30 degress and 150 degrees

b) 60 and 120 degrees

c) 90 degrees

d) 0 and 120 degrees

I think it is C because sin of (3 x 90 = 270) 270 degrees is -1?

Did I do this right? Or did I do something that cannot be done?

Thank you.

- math -
**Jai**, Thursday, March 31, 2011 at 12:09amyour answer is correct. :)

**Answer this Question**

**Related Questions**

trig - I have to retype this. For which angles theta, with 0 degrees less than/...

Math - Solving Trig Equations - Solve each equation on the interval: 0 is less ...

Calculus - Determine the measure of A if 0 degrees is less or equal to angle A ...

trig - on the same set of axes: (0 degrees is greater than or equal to x and x ...

Math - How do you express in terms of angles less than 90 degrees? sin 120 ...

trig - How do you express in terms of angles less than 90 degrees? sin 120 ...

Mathematics - If cosA is equal to 12/13 where 0 degrees is less than A less than...

Math/Trig - Solve: 2 sin x - 1 = 0 for 0 degrees is less than or equal to x is ...

Algebra 2 Honors - Find all solutions if 0 degrees is less than or equal to x ...

math - 1.) Find the solution set of 2sin squared θ-1= 0 if 180 degrees is ...