Question

If x cos A =1 and tan A =y then x^2-y^2 is equal to

Answer 1

Answer:

1

Step-by-step explanation:

xCosA = 1

=> x = 1/CosA = SecA

y = TanA.

Now

x² - y² = Sec²A - Tan²A = 1.          

Answer 2

Answer:

ans is 1

Step-by-step explanation:

tan A = 1

xcos A=1

x= 1/cos A

x= secA

x^2-y^2= sec^2 A- tan^2 A

= 1 ( by identity)