If sec2 (theta) + tan2 (theta) = 3, then the angle (theta) is equal to

Correct Answer: Option B

Explanation

sec² (theta) + tan² (theta) = 3
but tan² (theta) = 1 + sec² (theta)
1 + tan² (theta) + tan² (theta) = 3
2 tan² (theta) = 2
tan² (theta) = 1
but (theta) = 45^o
tan² 45^o = 1²
= 1
(theta) = 45^o