3 years ago

Evaluate, using the tables if necessary. sec 180 + sin 270 - tan 180 + cot 270

Mathematics

1 answer:

saul85 [17]3 years ago

6 0

Answer:

-2

Step-by-step explanation:

sec 180 + sin 270 - tan 180 + cot 270

= -1 + (-1) - 0 + 0

= -1 + (-1)

= -2

You might be interested in

what is an equation of the line that is perpendicular to line y= -1/2x -2 and passes through the point (0,-4)?

LiRa [457]

Answer:

$y = 2x -4$

Step-by-step explanation:

$y = -\frac{1}{2}x - 2\ \ \ \ \ \ (0, -4)$

To find the perpendicular equation of a line,

You need the product of their gradients to be -1

$-\frac{1}{2} \times ? = -1$

Divide both sides by $-\frac{1}{2}$

? = 2

The gradient of the perpendicular line is 2

Straight line formula is in the form $y = mx + c$

$y = 2x + c$

We're nearly there, we just need to find out c.

Luckily, we're given a point $(0, -4)$

$(x, y) = (0, -4)$

$y = 2x + c$

$-4 = 2(0) + c\\-4 = 0 + c\\c = -4$

We then end up with...

$y = 2x -4$

3 0

2 years ago

PLEASE HELP MEEEE BRAINIEST TO WHOEVER IS RIGHT.

padilas [110]

What’s D it doesn’t show?

8 0

3 years ago

Read 2 more answers

I need help with dis plz

kkurt [141]

Y = -3x + 10
im pretty sure it’s this one

6 0

3 years ago

Last week Mrs. Duncan rented a movie that was 99 minutes long. This week she rented a movie that was 4/3 the length of last week

Kay [80]

99*(4/3)=x
99*1.333=x
x=132

This week's movie was 132 minutes long, or 2 hours 12 minutes long.

3 0

3 years ago

Plzzz help me!!

bija089 [108]

The answer is 20 cm 3

3 0

4 years ago