Question

taking A = 30°, verify that
cos*4 A - sin*4A =cos2A​

Answer 1

Answer:it is right

Step-by-step explanation:

Cos^4(√3/2) - sin^4(1/2)= cos^2(√3/2)-sin^2(1/2)

9/16 - 1/16 = 3/4 - 1/4

8/16 = 2/4

1/2=1/2

Hence proved

Hope you understand

Answer 2

Answer:

Here is your answer....

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