To find the value of x when cos(x-π/4) = -√2/2, we need to first identify the angle whose cosine is -√2/2.
The cosine function is negative in the second and third quadrants. Since the cosine of π/4 is √2/2, the cosine of 5π/4 and 7π/4 will be -√2/2.
Therefore, we have two possible solutions for x: x = 5π/4 or x = 7π/4.
To find the value of x when cos(x-π/4) = -√2/2, we need to first identify the angle whose cosine is -√2/2.
The cosine function is negative in the second and third quadrants. Since the cosine of π/4 is √2/2, the cosine of 5π/4 and 7π/4 will be -√2/2.
Therefore, we have two possible solutions for x: x = 5π/4 or x = 7π/4.