First slide

Trigonometric Identities

Question

$C o t (1358^{0}) + \tan (3608^{0}) =$

Moderate

A

-1
B

0
C

1
D

2

Solution

$c o t (1358) = c o t (15 \times 90 + 8) = - \tan 8 \tan 3608 = \tan (40 \times 90 + 8) = \tan 8 a d d i n g b o t h$

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