Question

Math: https://snipboard.io/d3YP2C.jpg

Answer 1

do you know this formula of

sin(x+y) = ?

sin(a+b) = sina cosb + cosa sinb

\[\sin y = \cos x = \frac{ \sqrt{2} }{ 2 }\]

sin and cos of what angle measure is equal \[\frac{ \sqrt{2} }{ 2 }\] ?

Answer 2

Ummmm not sure

Answer 3

look please

sin 30° = 1/2

sin 60° = sqrt3 / 2

sin of what angle measure will be between these value of 30 and 60 to get like result the (sqrt2) / 2 ?

Answer 4

looke please on these answer choices ?

Answer 5

Uhhhhh I'm thinking pi/3?

Answer 6

pi/3 = 180/3 = 60°

sin 60 = sqrt3 / 2 not sqrt2 /2

and cos 60 = 1/2 not sqrt2 /2

for what angle measure sin of this and cos of this are equal value ?

Answer 7

pi/6 = 30

Answer 8

cos30 is sqrt3 / 2

Answer 9

sin30 is 1/2

Answer 10

yes right

so what choice is there again ?

Answer 11

The choices are
pi over 2
pi over 3
pi over 4
pi over 6

Answer 12

pi/2 = 90°

not is right

Answer 13

check the graph of sin and cos

Answer 14

pi/4 = 45*

Answer 15

cos45 i got sqrt2 /2

Answer 16

sin45 i also got sqrt2 /2

Answer 17

so it must be pi/4

Answer 18

perfect

Answer 19

thanks for the help!