If sin150=1/2 then find sin75

Question

asked Feb 13, 2022 203k views

1 Answer

asked May 8, 2022 17.1k views

Rdeetz asked May 8, 2022

8.3k points

1 answer

1 vote

17.1k views

asked Oct 7, 2020 99.1k views

Ivan Andrus asked Oct 7, 2020

8.6k points

1 answer

2 votes

99.1k views

asked Sep 12, 2020 42.5k views

Nya asked Sep 12, 2020

by Nya

8.3k points

2 answers

0 votes

42.5k views

Jaxkr · Answer 1 · 2022-02-17T02:35:28+0000

Sin75° = Sin(30° + 45°)

= Sin30°.Cos45° + Sin45°.Cos30°

= 1/2 . √2/2 + √2/2.√3/2

= √2/2 ( 1/2 + √3/2 )

= √2/2 ((1+√3 ) /2 )

= (√2 + √6 )/ 4