Learn CBSE Forum
Prove that: cos-1 4/5 + cos-1 12/12 = cos-1 33/65
CBSE Class 12
CBSE Class 12 Maths
trigonometric
,
class-12-maths
Murali
April 12, 2019, 5:32am
1
Prove that:
Murali
April 12, 2019, 5:33am
2