2cos(45)-tan(45)/90.5-64 =?

1 answer

just plug in your calculator. What do you get?

Similar Questions

how do you veriytan x + Cot y -------------- = tan y + cot x 1-tan x cot y sin^4x + cos^4x = 1- 2cos^2x + 2cos^4

Top answer: I get on the right: sin y / cos y + cos x / sin x (sin x sin y + cos x cos y) / sin x cos y sin x Read more.
if sin(x+⁡α)=2cos(x-b) show tan x such that :tan x=(2-tan⁡ α)/(1-2 tan α)

Top answer: To prove the equation tan(x) = (2 - tan(α))/(1 - 2tan(α)), we can start by simplifying both sides Read more.
prove that tan(pi/4 + 1/2cos-1a/b) + tan(π/4-1/2cos-1a/b)=2b/a

Top answer: If tanA=x Read more.
Given that Sin(A+B)=2Cos(A-B) and tan A = 1/3 ,Find the exact value of tan B.

Top answer: To find the exact value of tan B, we will need to use the given equation Sin(A+B) = 2Cos(A-B) and Read more.
Given that Sin(A+B)=2Cos(A-B) and tan A = 1/3 ,Find the exact value of tan B.

Top answer: if tan A = 1/3, then by Pythagoras, sin A = 1/√10 cos A = 3/√10 if sin(A+B) = 2cos(A-B) sinAcosB Read more.
Hello guys.I am just wondering if tan^2 A (tan squared A) = sin^2 A /cos^2A And 2tan A = 2sin A / 2cos A This has been bothering

Top answer: first one is true tan A = sinA/cosA square both sides: tan^2 A = sin^2 A/cos^2 A watch the second Read more.
show that cos2x=1-tan^ 2 x /1+tan^2x=2cos^2x-1

Top answer: cos 2x = cos(x+x) = cosxcosx - sinxsinx = cos^2 x - sin^2 x = cos^2 x - (1 - cos^2 x) = 2 cos^2 x - Read more.
Prove:2cos^2(x)-1 = 1-tan^2(x)/ 1+tan^2(x) Thank you!

Top answer: Examine both sides of the equation. The right-hand side can be reduced to sin(x) and cos(x), as is Read more.
Solve and prove the identity(tan x+ cot (-x))/ (tan x - cot(-x))= 1-2cos^2(x)

Top answer: recall that cot -x = -cotx = -1/tanx Read more.
2cos(45)-tan(45)/90.5-64 =?

Top answer: do you not have a calculator? just watch the order of operation, should be [2cos(45)] - Read more.