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3 years ago

In the figure below, two lines intersect, forming four angles. Write your answer in the space provided.

Mathematics

1 answer:

Maurinko [17]3 years ago

7 0

Answer:

Step-by-step explanation:

Angle A and 50 will combined have an angle of 180

Angle A = 180-50

Angle C is opposite of angle A and both will be equal. Same with Angle B and it's opposing Angle.

You got this!

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AnnZ [28]

You do this and then you do that

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3 years ago

Pls help i already tried to solve

Vikki [24]

Step-by-step explanation:

49 = -16t^2 + 56t

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3 years ago

State if the triangles are similar. If so, how do you know they are similar and complete the similarity statement.

timofeeve [1]

Answer:

YES by SAS

triangle TUV is similar to triangle TLM

Step-by-step explanation:

The ratios of the sides

24/6 = 4

36/9 = 4

so the sides are similar

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we have side included angle side

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triangle TUV is similar to triangle TLM

3 0

3 years ago

Prove that: cos^2 (45+A)+cos^2 (45-A)=1

Nata [24]

Answer:

see explanation

Step-by-step explanation:

Using the cosine addition formula

cos(A ± B ) = cosAcosB ∓ sinAsinB

Then considering the left side

cos²(45 + A) + cos²(45 - A)

= [ cos45cosA - sin45sinA ]² + [cos45cosA + sin45sinA]]²

= [ $\frac{1}{\sqrt{2} }$ cosA - $\frac{1}{\sqrt{2} }$ sinA ]² + [ $\frac{1}{\sqrt{2} }$ cosA + $\frac{1}{\sqrt{2} }$ sinA ]²

= $\frac{1}{2}$ cos²A - sinAcosA + $\frac{1}{2}$ sin²A + $\frac{1}{2}$ cos²A + sinAcosA + $\frac{1}{2}$ sin²A

= cos²A + sin²A

= 1

= right side , then proven

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3 years ago

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