Question

if 3 cot a = 4 check whether 1 minus tan square A by 1 + tan square A is equal to cos square A minus sin square A or not​

Answer 1

Step-by-step explanation:

tan a=perpendicular/base

tan a=3/4

cos a=base/hypotenuse

cos a=4/5

sin a=perpendicular/hypotenuse

sin a=3/5