Which of the following statement is true?
A) cos2θ+ sin2θ= 2, (for some value ofθ)
B) cos2θ– sin2θ= 1, (for some value ofθ)
C) sin θ = 2
D) sec θ = 1/3
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option b is correct sectheta>1 , sintheta<1 and for first option at any value of theta cos^2theta + sin^2theta≠0
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Answer:
Step-by-step explanation:
Option B is your right answer because it is a trigonometric identity .
That is: sin*2theata -cos*2theata=1.
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