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bixtya [17]
2 years ago
13

If sin A = 4/5 and A is in quadrant II, find tan 2A.​

Mathematics
1 answer:
ra1l [238]2 years ago
7 0

The value of tan2A given the trig expression is -128/21

<h3>Double angles</h3>

According to the double angle formula

tan 2A = 2tanA/1-tan²A

Given the following

sinA = 4/5 = opp/hyp

Tangent = 3units

TanA = opp/adj

TanA = 4/3

Substitute

Tan2A = 2(4/3)/1-(4/3)²

Tan2A = (8/3)/1-(16/9)

Tan2A = 8/3 * -16/7

Tan2A = -128/21

Hence the value of tan2A given the trig expression is -128/21

Learn more on double angle here: brainly.com/question/14691

#SPJ1

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The solution of the equation is x = 2

Step-by-step explanation:

The original equation is

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In this case, we add +10 on both sides, and we get:

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Solve this inequality j/4 - 8 &lt; 4
zubka84 [21]
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j should be less than 48 to make the inequality true.

example: j = 47
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47/4   - 8 < 4
11.75 - 8 < 4
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Any number below 48 will end up with an answer less than 4. if j is 48 and above, the inequality is false because the answer arrived at will be equal to or greater than 4.
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3 years ago
Question Completion Status:
Vlad [161]

Answer:

60 square feet

Step-by-step explanation:

to get the square feet (or the area basically) you multiply the length and width together

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