Ask question

Ask question

All categories

2 years ago

10

Cos(-170°) = _____ -cos10° cos10° cos(-10°)

1 answer:

Lera25 [3.4K]2 years ago

7 0

Answer:

<h3>-cos10°</h3>

Step-by-step explanation:

cos is positive at first and fourth quadrant

so, cos (-x) = cos (x)

also, cos(180-x) = -cos x

cos (180+x) = -cos x

cos (-170°) = cos (170°)

cos(170°) = cos (180° - 10°)

= - cos 10°

You might be interested in

Written as a simplified polynomial in standard form, what is the result when

grin007 [14]

The simplified form is 6x-6

5 0

3 years ago

Hello answer and I will give you brainliest:No cheating!

stich3 [128]

The answer is 58,875

6 0

1 year ago

HELP TIMED BRAINLIST

lesya692 [45]

Answer:

it's D

Step-by-step explanation:

You use distribute property, then add all like terms

3 0

2 years ago

Read 2 more answers

What is the answer to the question A 0.10

xenn [34]

Yeah it’s A q0 good luck

3 0

3 years ago

Read 2 more answers

What is the midpoint of a segment with These endpoints (-12,-3) and (3,-8)

Savatey [412]

Answer:

$(\frac{-9}{2},\frac{11}{2})$

Step-by-step explanation:

you have to use the midpoint formula which is

$(\frac{x1+x2}{2},\frac{y1+y2}{2})$

so you plug your numbers in

$(\frac{-12+3}{2},\frac{-3+-8}{2})$

Add the tops

$(\frac{-9}{2} ,\frac{-11}{2} )$

if possible simplify

and that is your answer

8 0

2 years ago