The value of 3 tan2 26° – 3 cosec2 64° is

The value of 3 tan² 26° – 3 cosec² 64° is
(a) 0
(b) 3
(c) – 3
(d) – 1

Solution:

3 tan² 26° – 3 cosec² 64°
= 3 tan² 26° – 3 cosec (90° – 26°)
= 3 tan² 26° – 3 sec² 26°

The value of is
(a) – cot θ
(b) – sin² θ
(c) – cos² θ
(d) – cosec² θ

Solution:

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