3 years ago

Which of the following angles is in the solution set of sec^2θ - 3secθ - 2 = 0 for 0° ≤ θ < 360°.

1 answer:

4 0

1 / cos^2 O - 3 / cos O - 2 = 0
1 - 3 cos O - 2 cos^2 O = 0

2 cos^2 O + 3 cos O - 1 = 0

cos O = 0.2807 , -1.78 ( -1.78 cannot be a solution)

O = 74 degrees (from 0.2807) another solution is 360-74 = 286 degrees

Its D

You might be interested in

Solve the equation 42=7r r=

Juli2301 [7.4K]

Answer: r=6

Step-by-step explanation:

Because if 42 equals 7 times r you just have to divide 42 by 7.

8 0

4 years ago

Read 2 more answers

A seamstress has 1/4 of a foot of thread. Then she uses 1/5 of a foot of thread to sew a hole. How much of the thread is left?

Ilya [14]

Answer is C) 1/20 of a foot

1/4 -1/5
= 5/20 - 4/20
=1/20

3 0

3 years ago

Which number line shows the solution set for 1h-21 = 4?

Dafna11 [192]

Answer: Option 2

Step-by-step explanation:

$|h-2|=4\\\\h-2=\pm 4\\\\h=-2, 6$

8 0

2 years ago

I need help heres the question:

dalvyx [7]

Answer:

the cost of the four meal is $4.00

8 0

2 years ago

G(x) = 3x + 1; Find g(-8)

gregori [183]

Answer:

g(-8) = -23

Step-by-step explanation:

g(x) = 3x + 1 Plug in g(-8)

g(-8) = 3(-8) + 1 Multiply 3 by -8

g(-8) = -24 + 1 Add 1 to -24

g(-8) = -23

5 0

3 years ago

Read 2 more answers