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3 years ago

Plsss help I’ll give u brainlest and 10 points

Mathematics

1 answer:

snow_lady [41]3 years ago

5 0

It says 5 points bro

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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)

3 0

3 years ago

I WILL GIVE BRAINLIEST :)

Triss [41]

Answer: I got 50x+$75 but I’m not too sure for the last step

Step-by-step explanation:

7 0

2 years ago

Find AB I need help !

xxMikexx [17]

9514 1404 393

Answer:

d. AB = 54

Step-by-step explanation:

The triangle is isosceles, so AB = AC.

(4x +6) = (5x -6)

12 = x . . . . . . . . . . . . add 6-4x to both sides

Then the length of AB is ...

AB = 4x +6 = 4(12) +6 = 48 +6

AB = 54

8 0

3 years ago

What is the equation of the line ?

Basile [38]

Either 1, or 2, smart ppl help!

3 0

2 years ago

How many solutions does 2(3x -4) = 3x -8+3x

never [62]

Answer:

no solutions

Step-by-step explanation:

6 0

3 years ago