Question

verify the following equalities sin 2 60 °+cos 2 60°= 1 answer ​

Answer 1

Step-by-step explanation:

we know that

sin²0 +cos²0=1

Answer 2

Step-by-step explanation:

Method 1 - Substitution of Values:-

sin²(60) = ¾

cos²(60) = ¼

therefore sin²(60) + cos²(60) = ¾+¼ = 4/4 = 1

Method 2- Formula based

Pre Requisite knowledge

We know that sin²A + cos²A = 1

In this case substitute A with 60 and get the answer..

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