Trigonometric Identities Practice - Example 6

All types of expertise come with strong fundamentals and a bit of practice. This video addresses the latter. But for some concept clarity you may have a look at these:
• Pythagorean Identity f...
• Other trigonometric id...
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[@mujibullah5449]

Initial letters of trigonometric ratios should be in small case.

[@mathdecoded]

thank you for pointing out, hope you weren't able to find any mistake in logic.