Question

Help me please need help​

Answer 1

Explanation:

1. x -> opposite side of 48°

o → hypotenuse

b → adjacent side of 48°

`\sf Sin \ 48^\circ = (opposite \ side )/(hypotenuse)\\\\\\0.7431 = (15)/(o)\\\\\\0.74 * o = 15\\\\\\ o = (15)/(0.74)\\\\\\`

o = 20.27

`\sf cos \ 48^\circ = (adjacent \ side )/(hypotenuse)\\\\\\0.67 =(b)/(o)\\\\\\0.67=(b)/(20.27)`

b = 0.67*20.27

b = 13.58

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

2) i → opposite side of 25°

n → adjacent side of 25°

`\sf Sin \ 25 =(i)/(t)\\\\\\0.42=(i)/(30)\\\\\\0.42*30=i`

i = 12.6

`\sf Cos \ 30^\circ =(n)/(t)\\\\0.91=(n)/(30)\\\\\\0.91*30 = n`

n = 27.3

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

3) a → opposite side of 70°

e → adjacent side of 70°

`Sin \ 70^\circ =(a)/(l)\\\\0.94 =(a)/(25)\\\\0.94*25=a`

a = 23.5

`\sf Cos \ 70^\circ =(e)/(l)\\\\0.34=(e)/(25)\\\\0.34*25=e`

e = 8.5

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

4)

`\sf Sin \ 52^\circ = (x)/(75)\\\\0.79*75=x\\`

x = 59.25

`\sf Cos \ 52^\circ = (z)/(75)\\\\0.62*75 =z`

z = 46.5