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topjm [15]
3 years ago
5

80 POINTS Verify the Identity. cot(x-π/2) = -tanx

Mathematics
2 answers:
lions [1.4K]3 years ago
8 0

= cos(x-π/2)/sin(x-π/2)

= (cos(x)cos(π/2) + sin((x)sin(π/2)) / (sin(x)cos(π/2) - cos(x)sin(π/2)

= sin(x)/ (-cos(x)) .... cos(π/2) = 0; sin(π/2) = 1

= -tan(x)

idk if this is right but i tried

vesna_86 [32]3 years ago
3 0

= -tan(x) is the answer :) :)

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Alex Ar [27]
Answer:

7.5 quarts of olive oil remain.

Explanation:

Let

q = quarts of olive oil remain

<span>25%</span> of olive oil remains means that <span>75%</span> has been used.

22<span>12</span> quarts = 22.5 quarts used

<span><span>22.5.75</span>=<span>q.25</span></span>

Multiply both sides by .25 to isolate q.

<span><span>22.5.75</span><span>(.25)</span>=<span>q.25</span><span>(.25)</span></span>

<span><span>5.625.75</span>=q</span>

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3 0
3 years ago
José put $1,500 into a savings account. He earns 3% interest every year. How much simple interest will he earn at the end of 3 y
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He would have a total of: $1639.09

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Step-by-step explanation:

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  • The first thing you do is multiply $1,500 by the %3 (0.03).

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7 0
2 years ago
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tresset_1 [31]

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4 0
3 years ago
Read 2 more answers
HELPPPPPPP PLSSSSSSSSSS
vichka [17]

Answer:

B

Step-by-step explanation:

I checked it and it’s right hope this helps!!

6 0
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kkurt [141]

Answer:

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