Question

Find sin ð and cos β if 4, and y = 1

Answer 1

here is triangle

Answer 2

so there is missed anything

x wann being equale 4 ?

Answer 3

explain

Answer 4

in the text of your exercise what is 4 ?

there i think you have missed anything

so we need calculing the sin $ and cos ß ,yes ?

Answer 5

do you see an attatchment for the triangle

Answer 6

yes i see it but there are x and y like sides of this triangle

so in the text of exercise you have wrote y=1 and whet is 4 ?

Answer 7

x is 4

Answer 8

i just need to know what sin and cos is?

Answer 9

ok

suppose x=4 and you have wrote that y=1

i think that you have learned that sinus of an angle equale opposite side divide hypothenuse and cosinus of an angle is equal adjacent side divide hypothenuse

do you know it ?

Answer 10

no

Answer 11

you kind of lost me at that sinus

Answer 12

so now i have wrote to you what you need using to calculi the needed cosinus and sinus of this angles

ok ?

Answer 13

ok

Answer 14

yes is sure that before all you need calculi the hypothenuse of this right triangle using pythagora

right ?

Answer 15

right

Answer 16

so can you solve it ?

Answer 17

is it 17

Answer 18

what is 17 ?

Answer 19

the hypotenuse

Answer 20

why is 17 ?

can you write me here what say the teorem of pythagora ?

Answer 21

nevermind

Answer 22

so let x and y two sides of an right triangle and the hypothenuse h

pythagora said that h^2 = x^2 + y^2

ok ?

Answer 23

so than h= ?

Answer 24

are you here ?

Answer 25

so if hypothenuse squared equale 17 ,than this mean that h= sqrt17

Answer 26

than sin đ = opposite side / hypothenuse

sin đ = y/sqrt17 = 1/ sqrt17 = sqrt17 / 17 after ratzionalize the denominator you get the sqrt17 /17

and for cos ß = adjacent side divide hypothenuse

cos ß = y/sqrt17 = 1/sqrt17 = sqrt17 / 17