Question

if 2 tan theta = √2 sec theta find 1) theta 2) sin ^2 theta - cos ^2 theta​

Answer 1

Answer: 2 tan Ф =√2

or, tan Ф =1/√2

i)  Ф = 45°

ii) sin^2  Ф - cos^2 Ф = (sin 45°)² - (cos  45°)² = (1/√2 )² -  (1/√2 )²  = 0

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