OPT Maths solution

Opt Maths solution: Class – 8 1.     Find the product of the following:        i.             (1+sin q )(1-sin q )     ii.             (tanA+cotA)(tanA-cotA)   iii.             (sin a +cos a )(sin a -cos a )   iv.             (3secβ-2secβ)(3secβ-2secβ)     v.             (1+tanA)(1-tanA)(1+tan 2 A)   vi.           (sin q -cos q )(sin 2 q +sin q .cos q +cos 2 q ) Solution of questions:        i.             Solution: here, L.H.S=(1+sin q )(1-sin q )        ...