Verifying trigonometric identities by converting to sines and cosines

👉 Learn how to verify trigonometric identities involving the addition and subtraction of terms. To do this it is usually useful to convert the addition or subtraction terms in terms of one trigonometric function and then evaluate. Another very useful method is to convert all terms to the equivalent sine and cosine functions and then simplify.

Organized Videos:
✅ Verify Trigonometric Identities
✅ Verify Simple Trigonometric Identities
✅ Verify Trigonometric Identities with Rational Expressions
✅ Verify Trigonometric Identities by Multiplying
✅ Verify Trigonometric Identities by Adding and Subtracting
✅ Verify Trigonometric Identities with Fractions
✅ Verify Trigonometric Identities by Pythagorean Identities

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[maalikserebryakov]

This technique of rewriting trig in terms of sin and cos is always a helpful tactic in trigonometric affairs

The structure of the trigonometric functions is such that all of them can be derived from Sin(x)

So when you rewrite all of them in terms of sin and cos, its like going back to first principles.

[maalikserebryakov]

Another technique is writing them in terms of complex exponentials

I bet that would work too as an extremely irritating loophole for examiners Lol

[maalikserebryakov]

This guy always starts off the video with a 30 second rambly verbiage of extremely vague, fragmented and meaningless general instructions

I think he does it more to organise his own thoughts than to teach