Question

tanx=3/4 then( 1-cosx)(1+cosx)​

Answer 1

Answer:

teacher :- hey how are you ?

student:- not good !

teacher :- what's wrong

Student :- my sister is at hospital she can't even speak or walk i think she is paralyzed

teacher :- omg ! I am sorry to hear !what happen ?

student :- she was born yesterday!!!!

If you laughed please thank me....

Answer 2

apply Phythogras theorem and also

$(x + y)(x - y) = {x}^{2} - {y}^{2}$

$1 - {cos}^{2} x \: = {sin}^{2} x$

we know that,

sin x = opposite side / hypotenuse side