SOLUTION: Simplify completely: 1 - 2sin^2 (50˚)
Algebra.Com
Question 1180317: Simplify completely: 1 - 2sin^2 (50˚)
Found 2 solutions by MathLover1, greenestamps:
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
.........
=
=
=
Answer by greenestamps(13203) (Show Source): You can put this solution on YOUR website!
What does "simplify" mean for an expression like this?
The other tutor EVALUATED the expression, which is one possible interpretation of your post.
Another possible interpretation is using the double angle formula for cosine:
cos(2x)=1-2sin(x)^2
1-2sin(50)^2 = cos(100)
RELATED QUESTIONS
Simplify completely
{{{ ((Cos(x)+sin(x))^2-(cos(x)-sin(x))^2)/ (2sin(2x)) }}}
(answered by kingme18)
Simplify.
2 - 2sin squared... (answered by erica65404)
1-(2sin(22.5)^2)
(answered by arallie)
2sin^2(2x)=1 (answered by Fombitz)
simplify... (answered by MathLover1)
Please simplify
2 - 2sin squared... (answered by jim_thompson5910)
(a4b-1)2 simplify expression... (answered by edjones)
Simplify completely: √(1 +... (answered by ikleyn)
Solve 2sin^2... (answered by ewatrrr)