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3 years ago

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Janet is 48 in tall and Lucy her younger sister is 32 in tall at 2:30 in the afternoon Lucy's Shadow extends 34 in how far does

Janet's Shadow extend at 2:30 in the afternoon

1 answer:

Elis [28]3 years ago

5 0

Janet is 50inches tall.

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Prove the following identity <br><br><br> sin x(sec x+cscx)= tan x +1

Alexxandr [17]

Answer:

Step-by-step explanation:

<u>________________________________________________________</u>

<u>FACTS TO KNOW BEFORE SOLVING :-</u>

<u></u> $\sin x = \frac{1}{cosec \: x} \: \: or \: \: cosex \: x = \frac{1}{\sin x}$ <u></u>

<u></u> $\cos x = \frac{1}{\sec x} \: \:or \: \: \sec x = \frac{1}{\cos x}$ <u></u>

<u></u> $\tan x = \frac{\sin x}{\cos x}$ <u></u>

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In the question ,

L.H.S. = $\sin x (\sec x + cosec \: x)$

R.H.S. = $\tan x + 1$

Lets solve L.H.S. first.

$\sin x (\sec x + cosec \: x)$

$=> \sin x( \frac{1}{\cos x} + \frac{1}{\sin x} )$

$=> \frac{\sin x}{\cos x} + \frac{\sin x}{\sin x}$

$=> \tan x + 1$

∴ L.H.S. = R.H.S. (Proved)

3 0

3 years ago

Pls kinda need help <br> lolol

alukav5142 [94]

I think that the answer is A.

3 0

3 years ago

I need another opinion ΔΔΔΔ

Cloud [144]

The answer should be c hope this helps

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3 years ago

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A trail is 2 miles long. There is a marker every 1/8 mile. How many markers are there?

attashe74 [19]

Answer:

16

Step-by-step explanation:

Number of Markers =

$2 \div \frac{1}{8} \\ = 2 \times 8 \\ = 16$

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Area of 23ft^2 what is the length of a square

pentagon [3]

Step-by-step explanation:

Area=23ft²

Side=√23ft²

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