Page 28 - Ebook Trigonometri_Krisna Hasugian_MESP 2019
P. 28
26) Prove the following identity is true
cot ⋅ sin ∙ cos = cos²
cos sin
= cos²
Solution: ∙ ∙ cos
sin 1 1
Need more help? Click below for Learning Video 3
Khan Academy video 4
27
