Jawaban:
no 1
2 sin x = √2
sin x = (√2)/2
sin x = sin 45°
x = 45°
no 2
cos x = cos 45°
no 3
tan x = tan 160°
x = 160°
no 4
3 sec² x - 1
= 3 (1 + tan² x) - 1
= 3 + 3 tan² x - 1
= 3 tan² x + 2 terbukti
no 5
5 cos² x + 5 sin² x
= 5 (cos² x + sin² x)
= 5 (1)
= 5 terbukti
sekian jawaban dari saya
semoga bermanfaat
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Jawaban:
no 1
2 sin x = √2
sin x = (√2)/2
sin x = sin 45°
x = 45°
no 2
cos x = cos 45°
x = 45°
no 3
tan x = tan 160°
x = 160°
no 4
3 sec² x - 1
= 3 (1 + tan² x) - 1
= 3 + 3 tan² x - 1
= 3 tan² x + 2 terbukti
no 5
5 cos² x + 5 sin² x
= 5 (cos² x + sin² x)
= 5 (1)
= 5 terbukti
sekian jawaban dari saya
semoga bermanfaat