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2 years ago

The ratio of corresponding sides of the first triangle to the second triangle below is

Mathematics

1 answer:

Cloud [144]2 years ago

8 0

Answer:

Step-by-step explanation:

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Please someone help me to prove this.

dem82 [27]

<h3>Answer :</h3>

We know that,

$\dag\bf\:sin^2A=\dfrac{1-cos2A}{2}$

$\dag\bf\:sin2A=2sinA\:cosA$

___________________________________

Now, Let's solve !

$\leadsto\:\bf\dfrac{sin^2A-sin^2B}{sinA\:cosA-sinB\:cosB}$

$\leadsto\:\sf\dfrac{\frac{1-cos2A}{2}-\frac{1-cos2B}{2}}{\frac{2sinA\:cosA}{2}-\frac{2sinB\:cosB}{2}}$

$\leadsto\:\sf\dfrac{1-cos2A-1+cos2B}{sin2A-sin2B}$

$\leadsto\:\sf\dfrac{2sin\frac{2A+2B}{2}\:sin\frac{2A-2B}{2}}{2sin\frac{2A-2B}{2}\:cos\frac{2A+2B}{2}}$

$\leadsto\:\sf\dfrac{sin(A+B)}{cos(A+B)}$

$\leadsto\:\bf{tan(A+B)}$

5 0

3 years ago

Read 2 more answers

ZABD and ZDBC are supplementary angles.

stellarik [79]

Answer:

Measure?

Step-by-step explanation:

Could u like explains more pls?

5 0

3 years ago

Read 2 more answers

A website posts evaluations on airlines. It posts the most positive and the most negative comments for each airline. Discuss the

Fittoniya [83]

Answer:

B. the reader cannot accurately assess the airline because the evaluations are not necessarily representative of all evaluations.

D. the reader cannot accurately assess the airline without reading all the evaluations.

Step-by-step explanation:

Using the most positive and the most negative comments to evaluate the airlines will not be an accurate measure of the airline because these are not a good enough sample. The opinions of those who fall in-between the most positive and negative should also be included as they could have some vital details as well.

Also, in order to be completely accurate, all the comments of the airline should have been posted because this would represent the entire population of comments and so would give the best assessment.

6 0

2 years ago

Find the quotient 5/28 divided by 1/7

devlian [24]

The answer is: 1.25

Remember: Keep the first fraction, Change the Sign, Flip the second fraction.

KEEP - 5/28

CHANGE - division to multiplication

FLIP - 7/1

8 0

3 years ago

Read 2 more answers

What is the quotient

ratelena [41]

Answer:

Step-by-step explanation:

Flip the second fraction and multiply.

3 0

3 years ago