448,662 views
39 votes
39 votes
Find the exact value of sin 105º.

User FrozenHeart
by
2.2k points

2 Answers

23 votes
23 votes
value is 1
(according to my calculator)
User M Katz
by
2.6k points
9 votes
9 votes

Answer:

sin 105 = sin (45 + 60) = sin 45 cos 60 + cos 45 sin 60, or

= (1 / √2)(1 / 2) + (1 / √2)(√3 / 2)

1 + √3

= -------------

2√2

Explanation:

User Jenelle
by
3.1k points