1.

Sec^2theta -tan ^2 theta=___a)0b)1c)1/√3d)not defined​

Answer»

➡ sec² θ - tan² θ = 1

★ More INFO :

\boxed{\begin{minipage}{7 cm} Fundamental Trigonometric Identities \\ \\$\sin^{2}\theta + cos^{2}\theta = 1 \\ \\ 1 + tan^{2}\theta = sec^{2}\theta \\ \\1 + cot^{2}\theta=\text{cosec}^2\, \theta$ \end{minipage}}


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