3 years ago

Make COS the subject of the formula

Mathematics

1 answer:

docker41 [41]3 years ago

6 0

c^2 = a^2 + b^2 - 2(ab)(cos C)

c^2 + 2(ab)(cos C) = a^2 + b^2

2(ab)(cos C) = a^2 + b^2 - c^2

cos C = (a^2 + b^2 - c^2) / 2ab - Answer choice E

Hope this helps! :)

You might be interested in

POINTS. POINTS. PLEASE ANSWER CORRECTLY.

nalin [4]

Answer:

what came first the chicken or the egg

3 0

2 years ago

Read 2 more answers

A regular polygon has 15 sides. Which is a possible angle of rotational sym

coldgirl [10]

Answer: if i did my math correctly, 72 degrees is ur answer.

Step-by-step explanation:

6 0

3 years ago

Given that a trapezoid has the following dimensions, find the area. Area = ________ units2

rjkz [21]

The formula for the area of a trapezoid is A = a+b/2 * h. So just plug in the dimensions.
A = 5 + 3/2 * 5
A = 8/2 * 5
A = 4 * 5
A = 20 units²
I hope this helps love! :)

8 0

3 years ago

Someone answer this please it's for edguniety

KengaRu [80]

D = 171 - (61+53) = 171 -124 = 47
E = 171 - 90 = 81
A = 81 - (34+24) = 81 - 58 = 23
B = 61 - 23 = 38
C = 90 - (33+ 38) = 90 - 71 = 19

answer is B.

3 0

3 years ago

(xy + 2x2y – x2 + 6x3) – (2xy – 6x2y + 4x2 – 6x3) – ( – 2x3 + x2y) + ( – x3 + 4xy + 3x2y – 2x2)

Mazyrski [523]

Answer: =-2(xy-6y-5)

Step-by-step explanation: multiply -(2xy-6 x 2y+ 4 x 2 -6 x 3) remove the parenthesis -2xy + 12 y - 8 +18 calculate -2xy+12y-8+18 factor the expression -2xy + 12y + 10 solution -2 (xy- 6y-5)

3 0

3 years ago