`((1+cosθ)/(1+sinθ))^(2) = (1+cosθ)/(1-cosθ)`
True or False?

If sqrt((1-cosθ)/(1+cosθ)) xx sqrt((cosecθ -cot θ)/(cosecθ +cot θ))= (1-r)/(1+r) , then the value of r is: यदि sqrt((1-cosθ)/(1+cosθ)) xx sqrt((cosecθ -cot θ)/(cosecθ +cot θ))= (1-r)/(1+r) है तो r का मानहैः

(5)/(10) lies between (1)/(2) and 1. True or false.

Some of the factors of (n ^(2))/(2) + (n)/(2) are (1)/(2) ,n and (n+1). True or false.

The value of ((sinθ -cosθ )(1 + tanθ + cotθ ))/(1+sinθ cosθ ) = ? ((sinθ -cosθ )(1 + tanθ + cotθ ))/(1+sinθ cosθ ) का मान है :

The value of ( 1 + cotθ – cosecθ ) ( 1 + cosθ + sinθ )secθ = ? ( 1 + cotθ – cosecθ ) ( 1 + cosθ + sinθ )secθ का मान है :

If (sinθ/(1+ cosθ)) + ((1 +cosθ)/sinθ) = 4/sqrt3 0^circ lt θ lt 90^circ , then the value of (tanθ + secθ)^(-1) is : यदि (sinθ/(1+ cosθ)) + ((1 +cosθ)/sinθ) = 4/sqrt3 0^circ lt θ lt 90^circ ,, तो (tanθ + secθ)^(-1) का मान है :

(sinθ - 2sin^3θ)/(2cos^3θ - cosθ) = tanθ

int _(2) ^(3)(x)/( x ^(2) +1) dx = 1/2 log 2 . True or False.

(5)/(6) lies between (2)/(3) and 1. True or false.

x = a(θ - sinθ), y = a(1 + cosθ) Find dy/dx