Question

Write a few paragraphs outlining your strategy for establishing identities.

Short answer

We can use different algebraic formula, trignometric identities, taking common factors out in different steps we will see that we come to the other side of the expression and thus the identity is proved.

Step-by-step solution

Step 1. Given Information

The given information is to outline your strategy for establishing identities.

Step 2. Explanation

We will consider the steps which we already used in this exercise for establishing various identities.

As first we will see the complicated side of the identity. We will then try to use different algebraic formula, trignometric identities, re writing an expression in terms of sine and cosine, taking the common factors out, multiplying and dividing the whole term by some appropriate expression to get the known formula, using common arithmetic for subtraction and addition etc. and there using these in different steps we will see that we come to the other side of the expression and thus the identity is proved.