Jawaban:
15. 3/5
16. 4/5
17. 3/5
18. (√2,π/4)
19. 34
Penjelasan dengan langkah-langkah:
15. cos α = AB/AC = 6/10 = 3/5
16. sin α = BC/AC = (√(10²-6²))/10 = 8/10 = 4/5
17. sin β = AB/AC = 6/10 = 3/5
18. r = √(x²+y²) = ✓((-1)²+(-1)²) = √2
ㅤ tan θ = y/x
ㅤ θ = arctan(y/x)
ㅤθ = arctan(1)
ㅤ θ = π/4
ㅤ (√2,π/4)
19. Diketahui M=N, a=6, b=2a, c=4b/3
ㅤb = 2a
ㅤb = 12
ㅤc = 4b/3
ㅤc = 16
a+b+c = 6+12+16 = 34
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Jawaban:
15. 3/5
16. 4/5
17. 3/5
18. (√2,π/4)
19. 34
Penjelasan dengan langkah-langkah:
15. cos α = AB/AC = 6/10 = 3/5
16. sin α = BC/AC = (√(10²-6²))/10 = 8/10 = 4/5
17. sin β = AB/AC = 6/10 = 3/5
18. r = √(x²+y²) = ✓((-1)²+(-1)²) = √2
ㅤ tan θ = y/x
ㅤ θ = arctan(y/x)
ㅤθ = arctan(1)
ㅤ θ = π/4
ㅤ (√2,π/4)
19. Diketahui M=N, a=6, b=2a, c=4b/3
ㅤb = 2a
ㅤb = 12
ㅤc = 4b/3
ㅤc = 16
a+b+c = 6+12+16 = 34