6. Verify each of the following identities. (7 points each) secx cotx tan 2 tan x b) (cos-x - cos4x) sinx cos'c sinºx
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6. Verify each of the following identities. (7 points each) secx cotx tan 2 tan x b) (cos-x - cos4x) sinx cos'c sinºx
6. Verify each of the following identities. (7 points each) secx cotx tan 2 tan x b) (cos-x - cos4x) sinx cos'c sinºx
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