The same sequence may be defined in three ways: 1) f(x) = 6x + 5 for x = {1, 2, 3, ...}, 2) a1 = 11 and an + 1 = an + 6 for n =
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Answer:
cos 225° =
sin 225° =
tan 225° = 1
Step-by-step explanation:
I cannot sketch a diagram, but a 225° angle is a 3rd quadrant angle and the reference angle is 45° (225 - 180 = 45)
cos and sin are negative in the 3rd quadrant and the tan is positive
cos 225° = - cos 45° =
sin 225° = -sin 45° =
tan 225° = tan 45° = 1