3 years ago

9.

1 answer:

5 0

I’m not sure if I get the question, but the second one would be a fact and the others are all statements. I hope this helps :)

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Complete the identity. =( sin (alpha +beta))/ (cos alpha cos beta)=?

dem82 [27]

Hi, We know:

Sin(a + b) = 2.Sin(a).Sin(b)

Then,

= 2Sin(a).Cos(b)/Cos(a).Cos(b)

Canceling Cos(b)

= 2Sin(a)/Cos(a)

As Tan(a) = Sin(a)/Cos(a)

Then we will stay:

= 2Tan(a)

Or

= Tan(a) + Tan(a)

There is anything wrong on the alternatives

4 0

3 years ago

Evaluate m – n if m = –16 and n = 28

natima [27]

Answer:-44

Step-by-step explanation:

-16-(28)=-44

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2 years ago

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gavmur [86]

Answer
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2 years ago

What is the measure of ∠ D? 101° 112° 122° 111°

kifflom [539]

Answer:

101

Step-by-step explanation:

360 - (78+91+90)

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3 years ago

the student council has 36 membersthe ratio of girls to boys is 5 to 4 how many student council members are girls?

kap26 [50]

Ratio of girls : boys = 5 : 4

Find total parts:
Total parts = 5 + 4 = 9

Find 1 part:
9 parts = 36
1 part = 36 ÷ 9 = 4

Find 5 parts (Girls):
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Answer: There are 20 girls.

8 0

2 years ago