Homework Help: Math

Posted by Jiskha lover:D on Tuesday, December 18, 2012 at 10:06pm.

Find angle A if it is greater than or equal to 0 degrees and smaller than or equal to 180 degrees. round to the nearest tenth of a degree, if necessary.
a) sinA = 0.5
b) cosA = -0.5
e) cosA = 0.4561
g) sinA = 0.5736

PLEASE HELP WID THIS!!:( i tried so much! but im not getting it...
Thanks I greatly appreciate it sooo much!!:)

Math - DrBob222, Tuesday, December 18, 2012 at 10:11pm
If sin A = 0.5, doesn't that make A =- 30 degrees. That is >0 and <180 so it qualifies. Just punch in the other numbers on your calculator and read the angle A. See if it meets the criteria.
Math - Jiskha lover:D, Tuesday, December 18, 2012 at 10:20pm
Thanks
oops--Math - DrBob222, Tuesday, December 18, 2012 at 10:31pm
That - slipped in. Sin A = 0.5; A = 30 degrees and not -30 degrees.

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