if cos theta + sec theta = 4 then the value of cos ² theta + sec² theta​

2 thoughts on “if cos theta + sec theta = 4 then the value of cos ² theta + sec² theta​”

1. Answer:

   here given cosθ+secθ=4…(i)

   Step-by-step explanation:

   on squaring eqn. i both side, we get

   cos²θ+sec²θ+2×cosθ×secθ=16

   =>cos²θ+sec²θ+2=16

   =>cos²θ+sec²θ=14.

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2. Step-by-step explanation:

   [tex] \cos \alpha + \sec\alpha = 4 \\ { \cos }^{2} \alpha + { \sec }^{2} \alpha = 16[/tex]

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