1.

Tan (1665)find the value of tan​

Answer»

Answer:

1

Step-by-step EXPLANATION:

hello

tan(1665)

can be written as

tan(1620+45)

tan(9π+45)

tan(8π+π+45)

tan[ 8π+(π+45) ]

for any even multiple of π

tan remain unchanged

so it is tan(π+45)

and in THIRD quadrant tan is positive

so is EQUAL to tan45 which is equal to 1

hope it helps


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