SOLUTION: If cos(2x + 25) degree = sin 35 degree, then x may equal a)15 b)25 c)10 d)20 Thanks Kamla

Algebra ->  Trigonometry-basics -> SOLUTION: If cos(2x + 25) degree = sin 35 degree, then x may equal a)15 b)25 c)10 d)20 Thanks Kamla      Log On


   

Question 388702: If cos(2x + 25) degree = sin 35 degree, then x may equal
a)15
b)25
c)10
d)20
Thanks
Kamla
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
Note that cos x = sin (90-x) when x is measured in degrees. Therefore 2x + 25 may equal 55, in which x = 15.