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Please solve this proof

Tan(pi/4 +x)+ Tan(pi/4+x)= 2Sec2x

1 answer

your identity is not true, it looked weird so I tried x = 30º
(pi/4 radians = 45º)
LS = tan75 + tan75
= 7.46
RS = 2sec²x
= 2sec²75
= 29.856 which is not equal to the LS

all you need is one exception, found one!
so NO ID

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