sin 105 degrees?=?

Answer 1

Sin (105)= Sin (60 +45) = Sin 60.cos 45 +cos 60.sin45
=root 3/2.1/root2 + 1\2 .1/root 2 = (root 3 + 1) / 2 root 2



Now gimme some points

Answer 2

If you wanted to find the degree like an angle degree your number would have to be a decimal instead of 105, while using the sin^-1 because you then would be findign the degree. Maybe 105 is being divided by something and you just looked over it. But then if you are just finding sin 105 then just put it in your calculator.

Answer 3

sin of 105 degrees is the same as the negative sine of 75 degrees or -0.9659

subtract 105 from 180 and you get -75 then look up the sign of 75 and attach the negative sign this checks with the rule that the sign of an angle in the second quadrant is negative.

Answer 4

sin(105) = -0.970535284 by calculator!

Answer 5

= sin 75°
= sin (45 + 30)°
= sin 45°.cos 30° + cos 45°.sin 30°
= (1/√2).(√3/2) + (1/(√2)). (1/2)
= (1 / 2√2).(√3 + 1)
= (√2/4).(√3 + 1)

Answer 6

sin(105) = -0.970535284

Answer 7

sin 105
= sin (45+60)
= sin45cos60 + cos45sin60
= (0.5√2)(0.5) + (0.5√2)(0.5√3)
= 0.25√2 + 0.25√6
= 0.25 (√2 + √6)