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3 years ago

Find using dirbubuttivity 1) {7/5×(-3/12) + (7/5 × 5/12)

Mathematics

1 answer:

yKpoI14uk [10]3 years ago

7 0

Answer: -7/60 x (3x -5)
step by step explanation: photomath app :)

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Sin theta+costheta/sintheta -costheta+sintheta-costheta/sintheta+costheta=2sec2/tan2 theta -1

sleet_krkn [62]

$\dfrac{sin\theta + cos\theta}{sin\theta-cos\theta}+\dfrac{sin\theta-cos\theta}{sin\theta+cos\theta}=\dfrac{2sec^2\theta}{tan^2\theta-1}$

From Left side:

$\dfrac{sin\theta + cos\theta}{sin\theta-cos\theta}\bigg(\dfrac{sin\theta+cos\theta}{sin\theta+cos\theta}\bigg)+\dfrac{sin\theta-cos\theta}{sin\theta+cos\theta}\bigg(\dfrac{sin\theta-cos\theta}{sin\theta-cos\theta}\bigg)$

$\dfrac{sin^2\theta+2cos\thetasin\theta+cos^2\theta}{sin^2\theta-cos^2\theta}+\dfrac{sin^2\theta-2cos\thetasin\theta+cos^2\theta}{sin^2\theta-cos^2\theta}$

NOTE: sin²θ + cos²θ = 1

$\dfrac{1 + 2cos\theta sin\theta}{sin^2\theta-cos^2\theta}+\dfrac{1-2cos\theta sin\theta}{sin^2\theta-cos^2\theta}$

$\dfrac{1 + 2cos\theta sin\theta+1-2cos\theta sin\theta}{sin^2\theta-cos^2\theta}$

$\dfrac{2}{sin^2\theta-cos^2\theta}$

$\dfrac{2}{\bigg(sin^2\theta-cos^2\theta\bigg)\bigg(\dfrac{cos^2\theta}{cos^2\theta}\bigg)}$

$\dfrac{2sec^2\theta}{\dfrac{sin^2\theta}{cos^2\theta}-\dfrac{cos^2\theta}{cos^2\theta}}$

$\dfrac{2sec^2\theta}{tan^2\theta-1}$

Left side = Right side so proof is complete

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3 years ago

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What is 8.2% of 500?

GuDViN [60]

Answer:

8.2% of 500 = 41

Step-by-step explanation:

Set up the equation. On a piece of paper, write the dividend (number being divided) on the right, under the division symbol, and the divisor (number doing the division) to the left on the outside. ...

Divide the first digit. ...

Divide the first two digits. ...

Enter the first digit of the quotient.

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4 years ago

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A box of chocolates contains, on average, 12 pieces of chocolate. If the number of chocolates in each box never varies from the

marta [7]

The answer would be C. 36

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3 years ago

Find the area of the blue triangle Omg pls help muehhh

Alik [6]

Answer:

B) 42 units squared

Step-by-step explanation:

12 * 7 = 84

84 / 2 = 42

Hope this helped! Have a nice day! Plz mark as brainliest!!!

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3 years ago

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PLEASE HELP AND ANSWER THE QUESTION IN FULL WILL GIVE BRAIN

Murrr4er [49]

Answer:

I think it might be data and range

Step-by-step explanation:

the answer is at the top

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3 years ago

Find using dirbubuttivity 1) {7/5×(-3/12) + (7/5 × 5/12)​

Find using dirbubuttivity 1) {7/5×(-3/12) + (7/5 × 5/12)