[" (a) "tan90^(@)],[sin2A=2sin A" is true when "A=],[" (a) "0^(@)" (b) "30^(@)]

Sin 2A = 2sin A is true when A =

sin 2 A = 2 sin A is true when A = ?

Sin 2A= 2 sin A is true when A equals to

sin2A=2sin A is true when A=0o(b)300 (c) 45o(d)60o

sin 2B = 2 sin B is true when B is equal to

If sin2A+sin2B=sin2C , prove that A=90^(@)" or " B=90^(@) .

The value of the ,, sin ^ (2) 37 ^ (@), sin ^ (2) 53 ^ (@), - tan ^ (2) 225 ^ (@) sin ^ (2) 53 ^ (@), -tan ^ (2) 135 ^ (@), sin ^ (2) 37 ^ (@) - tan ^ (2) 315 ^ (@), sin ^ (2) 37 ^ (@), sin ^ (2) 53 ^ (@)] | is

sin ^ (2) (13 ^ (@)), sin ^ (2) (77 ^ (@)), tan135 ^ (@) sin ^ (2) (77 ^ (@)), tan135 ^ (@), sin ^ (2) (13 ^ (@)) tan135 ^ (@), sin ^ (2) (13 ^ (@)), sin ^ (2) (77 ^ (@))]

The value of (1)/(2) sin ^(2) 90^(@) sin^(2) 30^(@) cos ^(2) 45^(@) + 4 tan ^(2) 30^(@) + (1)/(2) sin^(2) 90^(@) - 2 cos ^(2) 90^(@) is :