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Strike441 [17]
3 years ago
11

Answers or correcting???

Mathematics
1 answer:
never [62]3 years ago
7 0

Answer:

Answers

Step-by-step explanation:

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Step-by-step explanation:

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What is the measure of arc bc
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6 0
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If tan theta = 12/5 and cos theta < 0, what is sin theta ?
Talja [164]
1 + tan ² Ф=sec²Ф
1+(12/5)²=sec²Ф
169/25=sec² Ф
sec Ф=⁺₋√(169/25)=⁺₋13/5

sec Ф=1/cos Ф ⇒cosФ=1/sec Ф
 cos Ф>0   ⇔  sec Ф>0  ⇔  sec Ф=+ 13/5

cos Ф=1/secФ
cos Ф=1 / 13/5=5/13

we can calculate the sin Ф, with this method.
sin²Ф + cos²Ф=1  ⇒ sin Ф=⁺₋√(1-cos² Ф)
sin Ф=⁺₋√[1-(5/13)²]=⁺₋12/13
like cos Ф>0 and tan Ф>0   ⇒ sin Ф>0 ⇒sin Ф=12/13

answer: d.12/13

other method
tan Ф=sin Ф / cos Ф
12/5=sin Ф / 5/13
sin Ф=(12/5)*(5/13)=12/13

answer: d.12/13

8 0
3 years ago
Draw a picture of a figure that has more than 3 lines of symmetry. Draw the lines of symmetry
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A third grade teacher has 20 students in her class. Fifteen of the students are girls and five are boys. What is the ratio of gi
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15 : 5 = 3 : 1

Step-by-step explanation:

8 0
3 years ago
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