An item marked at Dhs.840 is sold for Dhs.756. What is the discount %? a 84% b 20% c 10%​

Step-by-step explanation:

reusbd7e uzvsais eurv3 e hdrcr Ricks is w

Dos. 84

Step-by-step explanation:

840 - 756 = 84

What percent is 84 of 849

x/100 = 84/840. (x/%=is/of)

(84 * 100)/840 (Cross multiplication)

= 84

sec ф = 5/3 (quadrant 4)

let x = base

y = perp

z = hypotenuse

sec ф = hypotenuse/base = 5/3

⇒ z = 5 and x = 3

finding y:

z² = x² + y²

5² = 3² + y²

y² = 25-9

y² = 16

y = 4

now finding all other geometric functions of theta:

sin ф = y/z = 4/5

sin ф = -4/5 (sin is negative in the 4th quadrant)

cos ф = x/z = 3/5

cos ф = 3/5 (cos is positive in 4th quadrant)

tan ф = y/x = 4/3

tan ф = -4/3 (tan is negative in 4th quadrant)

cosec ф = z/y = 5/4

cosec ф = -5/4 (cosec is negative in the 4th quadrant)

cot ф = x/y = 3/4

tan ф = -3/4 (tan is negative in 4th quadrant)