Trig Identities Part 3 (Part 5 if you watch the proofs)

Curated and Reviewed by Lesson Planet

Sal takes the mystery out of the trigonometric identities by showing how easily they can be derived. He continues with a problem he started in the video �Trig identities part three (part five if you watch the proofs) and proves the trig identities cos (-a) = cos a and sin (-a) = sin (a). He also proves sin(a + _/2) = cos (a)and sin (a) = cos (a - _/2) along with the difference of angle formulas by using the sum of angle formula.

3 Views 1 Download

Additional Tags

Trigonometry, basic trigonometry identities, sum of angles formula, double angle formula, math

Show More Show Less

Resource Details

Grade

10th - 12th

Subjects

Math

2 more...

Resource Type

Instructional Videos