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3 years ago

What is cos(A)? please explain

Mathematics

2 answers:

Ipatiy [6.2K]3 years ago

5 0

Answer:

cos(A) = adjacent side / hypotenuse

= 4/5

Yuliya22 [10]3 years ago

4 0

Answer:

$\small \sf \: cos ( A ) = \green{ \frac{ 4}{ 5}} \\$

Step-by-step explanation:

$\small \sf \: cos ( A ) = \frac{ adjacent \: side }{ Hypotenuse} \\$

Where, we have given

adjacent side is 4
Hypotenuse is 5

substitute the values that are given

$\small \sf \: cos ( A ) = \green{ \frac{ 4}{ 5}} \\$

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3 years ago

Given: ∠A and ∠B are complementary angles.

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Answer:

- For the statement $-3x=24$ , the reason is: Subtraction property of Equality

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Step-by-step explanation:

The missing pictures are attached.

We must remember that:

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$If\ a=b,\ then\ a+c=b+c$

- The Division property of Equality states that:

$If\ a=b,\ then\ \frac{a}{c}=\frac{b}{c}$

- The Substitution property of Equality states that:

$If\ a=b,\ then\ b\ can\ replace\ a$

Knowing this properties we can identify the missing reasons that correctly complete the proof.

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Answer:

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