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3 years ago

Determine cos 315degrees

Mathematics

2 answers:

sasho [114]3 years ago

8 0

It’s same as: cos45

You can always subtract or subtract FROM 360.

360-315=45

Exact value of cos45 is √2/2

Sergeeva-Olga [200]3 years ago

7 0

Answer:

Exact Form:

√ 2/ 2

Decimal Form:

0.70710678 …

Step-by-step explanation:

Find the exact value using trigonometric identities.

You might be interested in

The angle of depression from a bird sitting on top of a telephone pole to the base of a tree is 63 degrees if the telephone pole

Andre45 [30]

Answer:

9.17 feet.

Step-by-step explanation:

See the diagram attached to this answer.

Let, AB is the pole and CD is the tree.

From the top of the pole to the base of the tree the angle of depression as per the condition is 63°.

So, ∠ EBC = ∠ ACB = 63° {Since, BE ║ AC}

So, from Δ ABC, $\tan 63 = \frac{AB}{AC} = \frac{18}{AC}$ {Given height of the tower AB = 18 feet}

⇒ $AC = \frac{18}{\tan 63} = 9.17$ feet.

Therefore, the distance between the pole and the tree is 9.17 feet. (Answer)

6 0

3 years ago

A) Write down and simplify the expansion of (a + b/a)^6

Jlenok [28]

Answer:

a) a^6+6a^4b+15a^2b^2+20b^3+15(b^4/a^2)+6(b^5/a^4)+(b/a)^6

b) 20

c) a^6+6a^4+15a^2+20+15/a^2+6/a^4+1/a^6

Step-by-step explanation:

(a+b/a)^6=a^6+6a^5(b/a)+15a^4(b/a)^2+20a^3(b/a)^3+15a^2(b/a)^4+6a(b/a)^5+(b/a)^6

a^6+6a^4b+15a^2b^2+20b^3+15(b^4/a^2)+6(b^5/a^4)+(b/a)^6

b) the coefficient of b^3=20

c) if b=1, the expression is

a^6+6a^4+15a^2+20+15/a^2+6/a^4+1/a^6

4 0

4 years ago

Which equations are related equations to 14 + x = 26? Select each correct answer. X=26−14 26 + 14 = x 14=26−x 14−x=26

luda_lava [24]

Answer:

x = 26 - 14

14 = 26 - x

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

In circle S with mRST = 68, find the mRUT.

rjkz [21]

Answer:

m∠RUT=1/2 m∠RST

=1/2(68)

=34°

m∠RUT=34°

<h3><u>--------------------------</u></h3><h3><u>hope it helps...</u></h3><h3><u>have a great day!!</u></h3>

4 0

3 years ago

Jason is drawing the floor plan of his bedroom. He is drawing everything with dimensions that are 1/12 of the actual size. His b

irina [24]

Answer:

New bed dimension of bed 0.5 ft, 0.25 ft

New bed dimension of room 1.16 ft, 1.33 ft

Step-by-step explanation:

Given data:

bed dimension is given as 6 ft by 3 ft

room dimension is given as 14 ft 16 ft

according to the given information , new dimension of the room and bed will be 1/12 times of actual dimension. therefore we have

New bed dimension of bed $= \frac{1}{12} \times 6 ft, \frac{1}{12} \times 3 ft$

= 0.5 ft, 0.25 ft

New bed dimension of room $= \frac{1}{12} \times 14 ft, \frac{1}{12} \times 16 ft$

= 1.16 ft, 1.33 ft

7 0

4 years ago