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3 years ago

If tan a=1/7 and tan b=1/3, prove that cos 2a =sin 4b

Mathematics

1 answer:

koban [17]3 years ago

4 0

Solve is in the pic.

With Geometry..

GoodLuck:)

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Riley set up a snack table for her dog's birthday party. She invited all the neighborhood dogs

katen-ka-za [31]

hahaha since you don't know what i'm saying then when poop on people i will poop on you most lol

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2 years ago

A sphere has a diameter of 14 ft. What is its surface area? The surface area of the sphere is ft squared. (Type an exact answe

-BARSIC- [3]

Answer:

The Formula is 4 x Pi x Radius Squared . surface area of sphere = 4 x pi x radius x radius where "x" indicates multiplication and pi = approximately 3.141592654 4 * pi * r^2

Step-by-step explanation:

4 0

3 years ago

What is the greatest multiple of 14 and 21

vova2212 [387]

Answer:

The greatest multiple of 14 and 21 is 7.

Step-by-step explanation:

1,2,<u>7</u>,14

1,3,<u>7</u>,21

Hope it helps!

7 0

3 years ago

HELP ME PLEASE HELP ME!

alexgriva [62]

The chance of picking a almond cookie the first time:
you have 6 cookies, 3 of them are almond
So the chance of taking an almond cookie is
$\frac{3}{6} = \frac{1}{2}$
The second time there are 5 cookies left, 2 of them are almond cookies
The chance of taking an almond cookie is
$\frac{2}{5}$
To know the probability of picking two almond cookies in a row, multiply the changes:
$\frac{1}{2} \times \frac{2}{5} = \frac{1}{5}$
The chance of taking two almond cookies is 1/5

8 0

2 years ago

Read 2 more answers

Can someone please clearly explain how to correctly work out Q6? Much appreciated

steposvetlana [31]

s =1/2(u+v)t

u = 16, v=16, t=90

s = 1/2(16+16)90

s = 1/2(36)90

s = 16*90

s = 1440

4 0

3 years ago