Question

can anyone find value of Sin3A-Cos3A a)1 b)2 c)7 d)10 ​

Answer 1

$\huge\pink{\underline{Good-Evening}}$$\huge\blue{\fbox{\fbox{\fbox{\red{\mathcal{Hlo}}}}}}$$plz \: thx \: my \: amswer$Sin 3A = 3 Sin A - 4 sin³A

sin 3A = 3 (3/5) - 4 (3/5)³

sin 3A = 9/5 - 4 (9/25)

  =  9/5 - 36/25

  =  (9/5) x (5/5)  - 3/25

  =  45/25 - 3/25

  =  (45-3)/25

  =  42/25