3 years ago

Need help badly! Mind helping me out?

Mathematics

1 answer:

sergey [27]3 years ago

8 0

Answer:

Step-by-step explanation:

When you do the cube root of 1000, it becomes 10

The square of 64 is 8

10 - 8 = 2

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2 years ago

Please help me with this question!! I also need the steps

e-lub [12.9K]

Hi there!

$\large\boxed{x = \frac{\pi}{3} \text{ and } \pi}$

We are given:

cos(7x)cos(4x) = -1 - sin(7x)sin(4x)

Begin by moving all terms with variables to one side:

cos(7x)cos(4x) + sin(7x)sin(4x) = -1

The corresponding trig identity is cos(A - B). Thus:

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