All categories

3 years ago

Find the value of sec 38 ° to 4 decimal places.

1 answer:

5 0

Secd(38)
= 1/cosd(38)
= 1/sqrt[1-sind^2(38)] because cos^2(x) + sin^2(x) = 1
cos(30) = sqrt(3)/2 = 0.8660
cos(45) = 0.707
so cos(38) can be assumed to some where around 0.8
= 1/0.8
= 1.25

Therefore D is correct answer

You might be interested in

What is the area, in square feet, of the rectangle shown below?

Svet_ta [14]

Answer:

Step-by-step explanation:

= 34/5 × 19/4

= 646/20

= $32 \frac{6}{20}$

8 0

3 years ago

Read 2 more answers

How does theoretical probability of the event flip heads change when a coin is flipped more times in a experiment

Alisiya [41]

Answer:

It increases

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Solve the quadratic equation 4x2 − 121 = 0. Verify your answer using a difference-of-squares factoring method.

Alenkasestr [34]

Answer:

Option d) is correct

That is x equals plus or minus start fraction 11 over two end fraction

Step-by-step explanation:

Given quadratic equation is $4x^2-121=0$

To write the given quadratic equation by using a difference-of-squares factoring method:

$4x^2-121=0$

The above equation can be written as

$4x^2-11^2=0$

$(2x)^2-11^2=0$

The above equation is in the form of difference-of-squares

Therefore the given quadratic equation can be written in the form of difference-of-squares

by factoring method is $(2x)^2-11^2=0$

$(2x+11)(2x-11)=0$ (which is in the form $a^2-b^2=(a+b)(a-b)$ )

2x+11=0 or 2x-11=0

$x=\frac{-11}{2}$ or $2x=11$

$x=\frac{-11}{2}$ or $x=\frac{11}{2}$

$x=\pm \frac{11}{2}$

Therefore option d) is correct

That is x equals plus or minus start fraction 11 over two end fraction

5 0

3 years ago

Dan recently bought a new mountain bike for $550. His friend works

Wittaler [7]

$990
550 x .80 = 440
$550 + $440 = $990

8 0

4 years ago

A rhombus diagonals bisects opposite <br>a)angles <br>b)line

hichkok12 [17]

Answer:

The answer to this question is angles

3 0

3 years ago

Read 2 more answers