Q42 of 51 Page 54

If . Prove that: tan2 B – sin2 B = sin4 B sec2 B.

……(i)



……(ii)


We know that, sec2 x = 1 + tan2 x



……(iii)


…… (iv)


……(v)


from (ii) and (v)



from(v) and(iii)



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