Hi everybody, F(z)= (cosy+isiny), i must show that F( )=F( ).F( ) can you help me please???
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The hard way to do it, if you don't have that formula yet, is to use trig identities. Of course, . Also, and so that
Originally Posted by bhitroofen01 Hi everybody, F(z)= (cosy+isiny), i must show that F( )=F( ).F( ) can you help me please??? Well, write , and now just evaluate . Now just a little algebra + some powers arithmetic + basic trigonometry to get that the above certainly equals
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