SOLUTION: please help me Indicate whether the problem is true or false show how you got it sin25 degrees = sin155 degrees

Question 93988This question is from textbook
: please help me Indicate whether the problem is true or false show how you got it sin25 degrees = sin155 degrees This question is from textbook

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
please help me Indicate whether the problem is true or false show how you got it sin25 degrees = sin155 degrees
----------
sin(25 degrees) = sin(180-25 degrees) = sin(155 degrees)
------------
You can see this if you know something about the unit circle.
Draw the terminal side of a 25 degree angle; the y value where the line meets the unit circle is the sine.
Draw the terminal side of a 155 degree angle; the y value whee the line meets the unit circle is the sine.
You should be able to see that they are the same y value.
-------------
Cheers,
Stan H.
RELATED QUESTIONS
is the problem true or false?? please show me how you solved it tan20 degrees = cot70... (answered by stanbon)

Indicate whether the problem is true or false but show all work sin 0(with a dash... (answered by stanbon)

I don't understand the whole area thing. Can someone please help? I'd appreciate it.... (answered by Mathtut)

log(10x/y)=1+log x-log y. I have no idea whether this problem is true or false. Could... (answered by stanbon)

Indicate whether the conjecture is true or false. If false, provide a counterexample. (answered by stanbon)

How can i find the value of sin25... (answered by jsmallt9)

Indicate whether the statement is true or false. square root of 112 is a rational... (answered by rapaljer)

tell whether each statement is true or false: if two lines intersect, then the adjacent... (answered by richwmiller)

I have tried so many different things on this problem, thinking through why they would be (answered by edjones,jim_thompson5910)