Question

prove it plz plz.....
fast tomorrow is my exam
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Answer 1

It is my exam also and here is your solution

Answer 2

Answer:

To Prove :- Sin^4 A + Cos^4 A = 1

Step-by-step explanation:

LHS;

Sin^4 A + Cos^4 / 1 - 2 Sin^2 A Cos^2 A

= Sin A (Sin^2 A) + Cos A (Cos^2 A) / 1 - 2 (Sin^2A Cos^2 A)

=1 ( Sin^2 A Cos^2 A) / 1 (Sin^2 A Cos^2 A)

Cancel (Sin^2 A Cos^2 A) from numerator and denominator.

Then we will get, 1 / 1 = 1 = RHS

.*. LHS = RHS = 1

Proved :)

Hope this will help you.. :)

Be Brainly :)