Question

If cos A =12/13 then sin A=

Answer 1

Given Cos A=12/13
Cos²A=(12/13)²=144/169
We have,
Sin²A+Cos²A=1
⇒Sin²A=1-Cos²A
⇒Sin²A=1-(144/169)
⇒Sin²A=(169-144)/169
⇒Sin²A=25/169
⇒Sin A=√(25/169)
∴Sin A=5/13

Answer 2

Hope it helps...if its not clear thn plz ask me once again.. i ll rewrite n send u...n ask if u doesn't undrstnd also..i ll xplain it clearly...thanku