Question

find theta if given that sec theta minus 2 and tancube theta minus 1 equal to zero
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Answer 1

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Maths

Trigonometric Functions

Trigonometric Equations

If tan^2 \, \theta \, = \,...

MATHS

If tan2θ=1−a2, prove that secθ+tan3θcosecθ=(2−a2)3/2

November 22, 2019Pranya Champ

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ANSWER

We have 

secθ+tan3θcosecθ

=secθ[secθsecθ+tan3θcosecθ]

=secθ[1+tan3θ⋅sinθcosθ]

=secθ[1+tan3θ×cotθ]

=1+tan2θ[1+tan2θ]

=[1+tan2θ