Penjelasan dengan langkah-langkah:
sec=1/cos
misal arcsec(25/24)=arctan(x/24)=a
seca=25/24
cosa=24/25=samping/miring
tana=x/24=depan/samping
berlaku:
x²+24²=25²
x²=625-576=49
x=7
invers trigonometri
sec a = 1/cos a = 25/24
cos a = 24/25
tan a = x/24
cos + , tan + → kuadran 1
triple pythagoras → 7, 24, 25
atau
√(25² - 24²) = 7
sin a = 7/25
tan a = sin a /cos a = 7/24
a = arctan (7/24)
a = arctan (x/24)
Nilai x = 7
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Penjelasan dengan langkah-langkah:
sec=1/cos
misal arcsec(25/24)=arctan(x/24)=a
seca=25/24
cosa=24/25=samping/miring
tana=x/24=depan/samping
berlaku:
x²+24²=25²
x²=625-576=49
x=7
Verified answer
invers trigonometri
sec a = 1/cos a = 25/24
cos a = 24/25
tan a = x/24
cos + , tan + → kuadran 1
triple pythagoras → 7, 24, 25
atau
√(25² - 24²) = 7
sin a = 7/25
tan a = sin a /cos a = 7/24
a = arctan (7/24)
a = arctan (x/24)
Nilai x = 7