3 years ago

Prove that: 16sin20.sin40.sin60.sin80=3

1 answer:

6 0

to prove that 6720. Sin 40. Sin 60. 80 equals 3 you'd have to divide 16 by 20 multiply subtract both sides by 3 which is 24x + 6x + 8x + -14 equals 40 40 + 20 equals 16 - -40 equals 80 which equals to 3

You might be interested in

Write the equation of the sphere in standard form. x2 + y2 + z2 + 8x − 6y + 4z + 20 = 0

Nuetrik [128]

Answer:

$(x+4)^2 + (y-3)^2 + (z+2)^2 - 3^2 = 0$

Step-by-step explanation:

You have to find a, b, c, r so that the polynomial expands to match the given equation.

$(x-a)^2 + (y-b)^2 + (z-c)^2 - r^2 =\\x^2-2ax+a^2+\\y^2-2by+b^2+\\z^2-2cz+c^2-r^2 =\\ x^2 + y^2 + z^2 + 8x - 6y + 4z + 20$

$(a^2+b^2+c^2-r^2-20)+\\x(-8-2a)+y(6-2b)+z(-4-2c)=0$

$-8-2a=0, 6-2b=0, -4-2c=0\\a=-4, b=3, c=-2$

$(-4)^2+3^2+(-2)^2-r^2-20 = 0$

$16+9+4-20=r^2$

$r^2=9$

$r=3$

$(x+4)^2 + (y-3)^2 + (z+2)^2 - 3^2 = 0$

5 0

3 years ago

I have no clue how to do this, I've look all over the book and still dont understand it

Anna71 [15]

You can do this on a calculator

3 0

3 years ago

GIVING BRAINIEST EXPLAIN ANSWER

Neporo4naja [7]

Answer: B. -0.5 blocks per minute

Step-by-step explanation: It goes up 2 on the x column and down 1 (-1) on the y column. So it would be -1/2 = -0.5.

8 0

2 years ago

Read 2 more answers

Find the slope of the line through P(5.7) and Q(-1,7).

VARVARA [1.3K]

We can use the points given to solve for the slope.

Slope formula: y2-y1/x2-x1

7-7/-1-5

0/-6

Since the numerator is 0, the slope is 0.

Best of Luck!

8 0

2 years ago

You toss n balls into n bins. for each toss there is a 1/n probability that the ball you toss lands in any one of the bins. afte

defon

Answer:1/n - 2/n= -1/n

7 0

2 years ago

Prove that: 16sin20.sin40.sin60.sin80=3​

Prove that: 16sin20.sin40.sin60.sin80=3