SOLUTION: How to prove the cos formula by using the sin formula
Algebra.Com
Question 766357: How to prove the cos formula by using the sin formula
Answer by tommyt3rd(5050) (Show Source): You can put this solution on YOUR website!
What needs to be done is not clear to me from the given information please repost with a clear and complete question :)
RELATED QUESTIONS
How do I prove that cos(pi/2 - x) = sinx by using the formula... (answered by jkc52)
"simplify the expression by using a double angle formula or a half angle formula
2 sin... (answered by jjordan95)
Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula.
1 − (answered by Alan3354)
Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula
(1 −... (answered by Alan3354)
cos(120) +cos(30)
Using the product to sum formula (answered by MathLover1)
Using tanθ = sinθ/cosθ, prove the addition formula for tangent,
tan(A +... (answered by arallie)
Simplify the expression by using a double-angle formula.
{{{... (answered by Alan3354)
Simplify the expression by using a double-angle formula.
cos^2(2 theta)- sin^2(2... (answered by robertb)
Simplify the expression by using a double-angle formula.
cos^2(2pie/5) -... (answered by Alan3354)