Question

-
ii. निम्नलिखित में बहुपद है
a. /2x-1 b.
X-1
30.09.2
c.x2+3x
x+2​

Answer 1

Step-by-step explanation:

given that sec a -1/ sec a +1 =1-cos a/ 1+ cos a

to prove LHS=RHS

now,

sec a = 1/cos a so, (1/cos a-1) / (1/cos a+ 1)

→( 1-cos al cos a) / (1+cos a /cos a)

\ 1-cos a / 1+cos a = RHS