3 years ago

What is cos 75° to the nearest ten-thousandth?

Mathematics

1 answer:

KATRIN_1 [288]3 years ago

4 0

The answer is 0.2588

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Which decimal is less 8.0

Dennis_Churaev [7]

Answer:

7.9 is less than 8.0

Step-by-step explanation:

Source My head

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3 years ago

Read 2 more answers

Integral of cosecx dx =log|tanx/2| show that.

Pie

ANSWER:

Let t = logtan[x/2]

⇒dt = 1/ tan[x/2] * sec² x/2 × ½ dx

⇒dt = 1/2 cos² x/2 × cot x/2dx

⇒dt = 1/2 * 1/ cos² x/2 × cosx/2 / sin x/2 dx

⇒dt = 1/2 cosx/2 / sin x/2 dx

⇒dt = 1/sinxdx

⇒dt = cosecxdx

Putting it in the integration we get,

∫cosecx / log tan(x/2)dx

= ∫dt/t

= log∣t∣+c

= log∣logtan x/2∣+c where t = logtan x/2

7 0

3 years ago

Verify that -(x+y)=(-x)+(-y) when x=3/4 and y=2/5

frosja888 [35]

Answer:

note that when opening the bracket the value outside the bracket with be used to multiply all the values inside the bracket... for example -(3/4+2/5) the (-) subtraction sign will be used to multiply all the values in the bracket including the addition sign therefore changing plus to minus