3 years ago

Find the exact value of arccos (sin (pi/6). Explain your reasoning.

1 answer:

4 0

We have to find the exact value of: arc cos ( sin ( π /6 ) ).
We know that:
sin ( π/6 ) = sin 30° = 1/2
Arc cos is the inverse function of cosine.
arc cos ( 1/2 ) = 60° = π/3

You might be interested in

If a=8 and b=4, evaluate the following expression:2a−3b

Nata [24]

Answer:

Step-by-step explanation:

2(8)-3(4)

16-12

7 0

3 years ago

Read 2 more answers

If the circumference of a basketball is 29.5 inches, how many centimeters is the circumferenceof a basketball? Round your answer

Solnce55 [7]

Answer:

75 cm

Step-by-step explanation:

Every inch is 2.54 cm, so 29.5 in=74.93 cm. 74.93 rounded to the nearest whole is 75cm.

3 0

4 years ago

Read 2 more answers

Tickets for a school play are $9 per person at the door. However, Devon can save $3 per ticket if he buys his tickets ahead of t

DaniilM [7]

Answer:

3n=72

Step-by-step explanation:

3 0

3 years ago

Which option best describes the polynomial?

liq [111]

Degree of ploynominal is the largest exponent you find, which is here the 4x to the 6th. there are only two terms here.

4 0

3 years ago

PLEASE HELP ME I BEG

Kay [80]

Answer:

see explanation

Step-by-step explanation:

Using the trigonometric identity

• 1 + cot²x = csc²x

Consider the left side

$csc^{4}$ x - $cot^{4}$ x

Factorise as a difference of squares

= (csc²x - cot²x)(csc²x + cot²x)

= (1 + cot²x - cot²x)(csc²x + cot²x)

= csc²x + cot²x

= csc²x + csc²x - 1

= 2csc²x - 1 = right side ⇒ verified

8 0

3 years ago