Question

Tan A = 1, Evalute 1-sin A
1+sin a​

Answer 1

hope it'll help .......

Answer 2

Answer:

1/2 is the required answer.

Step-by-step explanation:

degree is being defined here by '#' symbol.

Given that, TanA = 1

=> A = 45#

Now, (1-sinA)(1+sinA) = 1 - (sinA)^2                                [(a-b)(a+b)= a^2 - b^2]

= cos^2 A                                                                       [1-sin^2A = cos^2A]

Now, (cos45#)^2 = 1/2

Hope this helps you.....