Question

1/cos A+sin A-1 + 1/cos A +sin A+1​

Answer 1

Step-by-step explanation:

Solution:

Consider LHS : 1+cosA / sinA

Multiplying and dividing by (1 − cosA) we will get,

\small \\ =\frac{1+\cos A}{\sin A}\times\frac{1-\cos

A}

{1-\cos A}\\\\\\ =\frac{1-\cos^2 A}{\sin A(1-\cos A)} \quad [\because (a+b)(a-b)=a^2-b^2]\\\\\\ =\frac{\sin^2 A}{\sin A(1-\cos A)} \quad [

\because \sin^2 A+\cos^2 A = 1]\\\\\\ =\frac{\sin A}{1-\cos A}= RHS

Answer 2

Step-by-step explanation:

$= 36y3 { {3033x0 = - - \times { \leqslant 0330 \times 3 \times \frac{?}{?} }^{?} \times \frac{?}{?} }^{?} }^{2} \times \frac{?}{?}$