Question

tana=1then the value of cosa​

Answer 1

Answer:

Step-by-step explanation:

tan A = 1 cos A =?

tan A = sin A

            cos A

1 = sin A

    cos A

CROSS MULTIPLICATION

cos A = sin A

Answer 2

Step-by-step explanation:

tana=1

Cosa=?

1+tan^2a=sec^2a

1+(1)^2=sec^2a

1+1=sec^2a

sec^2a=2

seca=√2

seca= 1/Cosa

√2=1/Cosa

Cosa =1/√2