cos 60 = 1/2
sin 30 = 1/2
(1/2)^2 + 2(1/2)
= 1/4 + 1
= 1/4 + 4/4
= 5/4
mohon maaf apabila ada kesalahan
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cos 60 = 1/2
sin 30 = 1/2
(1/2)^2 + 2(1/2)
= 1/4 + 1
= 1/4 + 4/4
= 5/4
mohon maaf apabila ada kesalahan