If the angles
are represented in degrees, find both angles:
sin(x + 7) = cos(4x + 8)
2 answers:
Answer:
x = -1/3
Step-by-step explanation:
We have,
sin(x + 7) = cos(4x + 8)
We need to find the value of x.
We know that,
sin(90-x) = cosx
So,
sin(90-(x + 7)) = cos(4x + 8)
cos(x+7) = cos(4x + 8)
i.e.
(X+7) = (4x+8)
7-8 = 4x-x
-1 = 3x
x = -1/3
Answer:
sin(22
∘
) = cos(68∘
)
Step-by-step explanation:
Sin(x+7)=cos(4x+8)
(x+7) + (4x+8) =
90
x + 7 + 4x + 8 = 90
5x + 15 = 90
−15 = −15
5x/5 = 75/5
x = 15
Answer: sin(22
∘
) = cos(68∘
)
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