Evaluate Each Expression: a) 2cos^2

Multiply then use fundamental identities to simplify the expression below and determine which of the following is not equivalent
1. 1 answer
2. asked by Tristian
3. 1,673 views
Evaluate Each Expression:a) 2cos^2 2π/3 - 1 b) cos^2 7π/8 - sin^2 7π/8 c)2sin 11π/12 x cos 11π/12 d) 1 - 2sin^2 π/2
1. 1 answer
2. asked by Muneer
3. 466 views
cosA= 5/9 find cos1/2Aare you familiar with the half-angle formulas? the one I would use here is cos A = 2cos^2 (1/2)A - 1 5/9 +
1. 0 answers
2. asked by Anonymous
3. 815 views
What am I doing wrong?Equation: sin2x = 2cos2x Answers: 90 and 270 .... My Work: 2sin(x)cos(x) = 2cos(2x) sin(x) cos(x) =
1. 1 answer
2. asked by Anonymous
3. 971 views
how does 2cos(2x)-2cos(x)sin(x) becomes 2cos(2x)-sin(2x)? Try to explain each step simply.
1. 1 answer
2. 71 views
Determine the solution of the equetion: 2cos x-1=0? 2cos x=0? and 2cos x+1=0?
1. 3 answers
2. asked by Miley
3. 495 views
simplify the following expression sin(v+x)-sin(v-x)?Rewrite the expression as an algebraic expression in x. sin(2cos^-1x)
1. 1 answer
2. asked by Anonymous
3. 1,943 views
Evaluate ∫ (cos(x))^(1/2)sin(x)dxLet u = cos(x)? ∫ (u)^(1/2)sin(x)dx = ∫ [2u^(3/2)/3]sin(x)dx ∫ [2cos(x)^(3/2)/3]
1. 2 answers
2. asked by Justin
3. 579 views
Identify the equation for the following graph: (1 point) Responses y=2cos(2x) y is equal to 2 cosine 2 x y=−2cos(2x) y is
1. 1 answer
2. 93 views
Use symbols to write the expression and then evaluate itThirty six squared divided by six cubed The given expression symbol is?
1. 3 answers
2. asked by Tammy
3. 1,230 views