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Alona [7]
3 years ago
9

I give yall brainliest

Mathematics
1 answer:
Lady bird [3.3K]3 years ago
8 0

Answer:

1 ) 7

2 ) 4

3 ) it is always zero !!

Step-by-step explanation:

number 1 is easy !! its always the positive value of whatever number is inside the brackets.

number two, since the signs are both negative, you just divide it normally !! so thats 4 !

and the last one is just a simple rule, where it is always zero.

i hope this helps !

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wel

Answer:

cos 225° = -\frac{\sqrt{2} }{2}

sin 225° = -\frac{\sqrt{2} }{2}

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° = -\frac{\sqrt{2} }{2}

sin 225° = -sin 45° = -\frac{\sqrt{2} }{2}

tan 225° = tan 45° = 1

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May I have brainliest please? :)

6 0
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w=3 can i have brainliest

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