3 years ago

Please help me, I am so confused. Thanks

Mathematics

1 answer:

miskamm [114]3 years ago

8 0

Answer:

c. 80

Step-by-step explanation:

cos x = sin(x-70)

cos x = cos [90-(x-70)]

cos x = cos (90-x +70)

cos x = cos 160 -x

x= 160-x

2x = 160

x =80

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Please help me, I am so confused. Thanks​

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