Math, asked by ali4249, 1 year ago

plz solve the problem

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Answered by Shri2002
2
Please mark as brainliest
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ali4249: thx for the best answer
Answered by siddhartharao77
4
Given LHS= sin^4theta - cos^4theta + 1

We know that a^2 - b^2 = (a + b)(a - b), Then a^4 - b^4 = (a^2 + b^2)(a^2 - b^2)

(sin^2theta + cos^2theta)(sin^2theta - cos^2theta) + 1

(1) (sin^2theta - cos^2theta) + 1

sin^2theta - cos^2theta + 1

We know that 1 - sin^2theta = cos^2 theta

sin^2theta - (1 - sin^2theta) + 1

sin^2theta - 1 + sin^2theta + 1

2sin^2theta.


LHS = RHS


Hope this helps!

ali4249: thx for answer
ali4249: thx for showing me the full method
siddhartharao77: ok
ali4249: sorry
ali4249: that i dont mark u brain list
siddhartharao77: Its okkk.. :-))
ali4249: i have one more question
ali4249: can u ans my question
ali4249: a new one i have plott
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