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Burka [1]
3 years ago
9

Use a calculator to evaluate sec 85°.

Mathematics
1 answer:
umka21 [38]3 years ago
7 0
Your  calculator might not be able to perform a "secant" function, but that's because it's easy to convert.

On top of your three basic trig functions (sine, cosine, and tangent) there are three more which act as their reciprocals. (cosecant, secant, and cotangent, respectively)

As review: A reciprocal is when you flip a fraction. For instance, the reciprocal of 2/3 is 3/2. If you have some number that's not a fraction like 5, you can put it as a fraction 5/1 and then get the reciprocal 1/5.

sec(85°) is the reciprocal of  cos(85°)
sec(85°) = 1/cos(85°) = 1/0.0871557427 = 11.4737133 <em>(round as needed)</em>
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Write three numbers that are greater than 543,000 but less than 544,000
gizmo_the_mogwai [7]
543,100
543,400
543,642
543,636
543,367
543,745
All you have to do is change the last 3 digits to any number, while keeping the first 3(543) the same.
4 0
3 years ago
Which one of the following sets of numbers represents the lengths of the sides of a right triangle ?
Harrizon [31]
Let "a", "b" and "с"  be sides of the triangle ("с" is the longest side). The triangle will be right if a² + b² = c²

<span>a. 13 35 37
13</span>² + 35² = 1394  and 37² = 1369
1394 ≠ 369

<span>b. 6 9 10 
</span>6² + 9² = 117  and 10² = 100
117 ≠ 100

<span>c. 5 12 13
</span>5² + 12² = 169  and 13² = 169
169 = 169   ←   <span> right triangle 

</span>d. 9 40 42
9² + 40² = 1681  and 42² = 1764
1681 ≠ 1784


The answer is <span>c. 5 12 13</span>
8 0
3 years ago
Read 2 more answers
1. Five more than three times a number is sixty- five.
nalin [4]
First equation
a. 3x+5=65
b.3x=60     x=20



7 0
4 years ago
Solve this formula for interest for time (t).<br> I = prt<br> Show Your Work
marusya05 [52]

Step-by-step explanation:

i=prt

t=i÷pr

..

..

..

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8 0
4 years ago
0. A total of 48 percent of the women and 37 percent of the men who took a certain "quit smoking" class remained nonsmokers for
horrorfan [7]

Answer:

a. 23 % b. 45.9 %

Step-by-step explanation:

Since 62 % men initially 48 % will be women this shows 48 *48/100 will 37*62/100 of men

3 0
3 years ago
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