3 years ago

NEED HELP ON MATH ASAP

Mathematics

1 answer:

RSB [31]3 years ago

7 0

I think it’s A but I’m not sure

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Help me please the picture below has the question and the answers

andrezito [222]

Answer:

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6 0

2 years ago

Cos (90-theta) • cosec90-theta) =tano. How?

denis-greek [22]

Answer:

______________________________________________________

TRIGONOMETRY IDENTITIES TO BE USED IN THE QUESTION :-

For any right angled triangle with one angle α ,

$\cos (90 - \alpha ) = \sin \alpha$ or $\sin(90 - \alpha ) = \cos\alpha$

$cosec \: (90 - \alpha ) = \sec\alpha$ or $\sec(90 - \alpha ) = cosec\:\alpha$

SOME GENERAL TRIGNOMETRIC FORMULAS :-

$\sin \alpha = \frac{1}{cosec \: \alpha }$ or $cosec \: \alpha = \frac{1}{\sin \alpha }$

$\cos \alpha = \frac{1}{\sec \alpha }$ or $\sec \alpha = \frac{1}{\cos \alpha }$

______________________________________________________

Now , lets come to the question.

In a right angled triangle , let one angle be α (in place of theta) .

So , lets solve L.H.S.

$\cos (90 - \alpha ) \times cosec(90 - \alpha )$

$=> sin\alpha \times \sec\alpha$

$=> \sin\alpha \times \frac{1}{\cos\alpha }$

$=> \frac{\sin\alpha }{\cos\alpha }$

$=> \tan\alpha$ = R.H.S.

∴ L.H.S. = R.H.S. (Proved)

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3 years ago

There are 2.54 centimeters in 1 inch. There are 100 centimeters in 1 meter. To the nearest inch, how many inches are in 12 meter

Alexandra [31]

Answer:

12 meters = 472.441 inches

~Hope this helps~

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3 years ago

Craig measured a length as 0.034 millimeters. What is the margin of error?

Salsk061 [2.6K]

Answer:

0.0335mm to 0.0345mm

Step-by-step explanation:

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3 years ago

Sophia scored 92% in a math test. If the test had 50 questions, how many did she get right? *

zloy xaker [14]

Answer:

46 questions correct

Step-by-step explanation:

100% = 50 questions
2% = 1 question
92% = 46 questions

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3 years ago