Sin (2π/3) =?

'sin^2(pi/6)+cos^2(pi/3)- tan^2(pi/4)=-1/2'

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Solve | Sin π/2 | using calculator (Casio fx-991MS)

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Prove sin^2(pi/6) + cos^2(pi/3) - tan^2(pi /4) = -1/2

Prove that: sin ^2π/6+cos ^2π/3-tan ^2π/4=-1/2 LHS = sin ^2π/6+cos ^2π/3-tan ^2π/4 = (1/2)^2+(1...

Find trigonometry angle cos⁡(2π/3) = ?

Solve | sin 30 degree | using calculator (Casio fx-991MS)

`4 sin(pi/6)sin^2(pi/3)+3cos(pi/3)tan(pi/4)+cose^2(pi/2)=2sec^2(pi/4)`

Trigonometry: Find sin (π/3)

単位円三角法 - sin cos tan - ラジアンと度

find the value of sin(2pi/3) || sin(2π/3) || sin(120°)

Casio calculator not displaying a fraction

How To Find The Exact Values of Trig Functions

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Obtaining a fraction instead of obtaining decimal number in fx-991ES PLUS calculator