Question

if sinx = tanx then | 2 cos x | equals

Answer 1

Step-by-step explanation:

sinx= tanx

sinx/tanx = 1

sinx/(sinx/cosx) = 1

(sinx × cosx)/sinx = 1

cosx= 1

on multiply both side by 2

2cosx = 2

hence 2cosx is equal to 2

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