i want all the trignometric equations of
-sin2a
-cos2a
-tan2a
-sin3a
-cos3a
-tan3a
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SIN2A=2 SIN A .COS A
COS 2A =COS²A-SIN²A (OR) 1-2SIN²A (OR) 2COS²A-1
TAN2A=(2 TAN A)/1-TAN²A)
COT 2A=(COT²A-I)/2 COT A
Anonymous:
buddy...do u knw...other equations of sin2A??
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