The sum of a number z and 4 is less than 12.

Mathematics

1 answer:

Volgvan3 years ago

3 0

Answer:

The answer is A x+4<12

this is due to the fact that if we use key words, sum means addition so the answer is x+4<12

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Using the triangle below, answer the following questions.

fomenos

Step-by-step explanation:

Answer(1):

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Answer(2):

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Answer(3):

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Check the attached picture for the list of formulas:

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3 years ago

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Answer:

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Step-by-step explanation:

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daser333 [38]

Answer:

See below

Step-by-step explanation:

$\frac{1}{1-cos A} - \frac{1}{1+cos A} =2 cosec A cot A \\ \\ L. H. S.= \frac{1}{1-cos A} - \frac{1}{1+cos A} \\ \\ = \frac{1+cos A - (1 - cos A)}{(1-cos A)(1+cos A)}\\ \\ = \frac{1+cos A - 1 + cos A}{1-cos^{2} A}\\ \\ = \frac{2cos A }{sin^{2} A}\\ \\ =2 .\frac{1}{sin A}.\frac{cos A }{sin A}.\\ \\ = 2.cosec \: A.cot \: A \\ \\ = R.H.S$