How to find sinα, cosα, tgα if cos α/2=-8/17, where sinα/2 is a positive number. Trigonometry 10...
The video explains in a simple and accessible form the solution to the example on the topic "Double Angle Formulas" from the trigonometry section of the 10th grade (basic and advanced levels).
I would be grateful for a donation to support the channel: https://www.donationalerts.com/r/vide...
Watch the full trigonometry course here: • Учимся решать задачи. Тригонометрия
Trigonometry ege profile level
Trigonometry from scratch
#trigonometry
#formulas
#ege
#zno