In a triangle ABC right angeled at C , if tan A = 1 ,find the value of cos B
Answers
Answered by
3
Hi Mate ! ! !
Tan ( A ) = Tan ( 45 )
because we know that Tan ( 45 ) = 1
=>
A = 45
A + B + 90 = 180
because it is a right angled trangle
B = 45
So,
Cos ( B ) = Cos ( 45 ) = 1/√2.
!!!!! Hope it helps!!!!!!
Tan ( A ) = Tan ( 45 )
because we know that Tan ( 45 ) = 1
=>
A = 45
A + B + 90 = 180
because it is a right angled trangle
B = 45
So,
Cos ( B ) = Cos ( 45 ) = 1/√2.
!!!!! Hope it helps!!!!!!
creatornisha2016:
Thankx
Similar questions