RRB Group-D Model Paper 12 with answers for online practice

Question : 92 of 100

Marks: +1, -0

Find x if tan x = Sec 45° Cosec 45° - tan 45°

Solution:

Given:
tan x = Sec 45° Cosec 45° - tan 45°
Calculation:Putting values, we get
tan x =

√2 × √2 - 1

⇒ tan x = 2 – 1 = 1
⇒ x = 45°

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