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To be more specific I would like to see more examples of basic trig identities such as the reciprocal and quotient identities. I find that it is very helpful for students to conquer these two …

In step 3 I simplified. In step 4 I multiplied both sides by sin in order to get rid of the denominator under cos^2. In step 5 I simplified, and rewrote csc in terms of sin on the right side of the eq. …

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Trigonometric Identities Trig identies part 3 (part 5 if you watch the proofs) Proof: sin(a+b) (cos a)(sin b) + (sin a)(cos b) This original Khan Academy video was translated into isiZulu by …

In step 2 we rewrite sec(x) in terms of tan(x), by the Pythagorean identity 1 + tan^2(x) = sec^2(x). Since we need sec(x), not sec^2(x), we take the square root of both sides of the identity, which …

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If you're seeing this message, it means we're having trouble loading external resources on our website. If you're behind a web filter, please make sure that the domains *.kastatic.org and …

With computers is better at calculate than us, is it possible for me to skip identities and just focus on the basic concept of math? (I would like to be an engineer, so is this possible?)

Наша місія — надавати безкоштовну освіту світового рівня будь-кому та будь-де.