1/1000th: The Sports Photography of Bob Martin

1/1000th: The Sports Photography of Bob Martin

Matematika tolong Bantu dong plis soalnya besok udah di kumpul​

tolong Bantu dong plis soalnya besok udah di kumpul​

Jawab:

sin α =  1/2 = d/m
d=1,  m = 2,
s² = m²-d² =4-1= 3
s= √3

cos α = s/m = (√3)/2
cos α=  ¹/₂ √3



tentukan
a. sin 2 α
= 2 sin α cos α
=  2 (1/2)(1/2√3)
= 1/2 √3

b. cos 2α =  1 - 2 sin²α
cos 2α =  1-  2(1/4) = 1 - 1/2= 1/2

c. tan 2α =  ( sin 2α)/(cos 2α)
= 1/2√3  /(1/2)
=  √3

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