Скачать с ютуб Class 10 Opt math Trigonometric Ratio of Multiple Angles Imp Qs , Qs no 14 vedanta Part-4 в хорошем качестве

Class 10 Opt math Trigonometric Ratio of Multiple Angles Imp Qs , Qs no 14 vedanta Part-4

Class 10 Opt math Trigonometric Ratio of Multiple Angles Part -4 Qs no. 1 # (sec(8theta) - 1)/(sec(4theta) - 1) = (tan 8theta)/(tan 2theta) Qs no. 2 # tan theta + 2tan 2theta + 4tan 4theta + 8cot 8theta = cot theta Qs no. 3 # sin^ 2 alpha - cos^2 alpha .cos 2 beta=sin^ 2 beta-cos^ 2 beta .cos 2 alpha Qs no. 4 # sqrt 2 + sqrt(2 + sqrt(2 + 2cos 8theta)) = 2cos theta Qs no. 5 # (sin^2 alpha - sin^2 beta)/(sin alpha * cos alpha - sin beta * cos beta) = tan(alpha + beta) Part 1,2,3 link is    • class 10 Opt math   #vedanta #goverment book #maths #class10 #optionalmath #optmath #optmathnepal