Final Answer
Step-by-step Solution
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I. Express the LHS in terms of sine and cosine and simplify
Learn how to solve differential calculus problems step by step online.
Learn how to solve differential calculus problems step by step online. Prove the trigonometric identity (1+cos(x))(1-cos(x))=sin(x)^2. section:I. Express the LHS in terms of sine and cosine and simplify. Start from the LHS (left-hand side). The sum of two terms multiplied by their difference is equal to the square of the first term minus the square of the second term. In other words: (a+b)(a-b)=a^2-b^2.. section:II. Express the RHS in terms of sine and cosine and simplify.