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Linear Functions

sec^4A-†an^4A...

Question

sec^4A-†an^4A=1+2†an^2A. Prov

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Similar questions

Evaluate: $\frac{sec 8 A - 1}{sec 4 A - 1} =$

s e c^{4} A - s e c^{2} A = t a n^{4} A + t a n^{2} A

Q. Question 5
If

s e c 4 A = c o s e c (A - 20^{\circ})

, where 4A is an acute angle, find the value of A.

Q. If a, b, c are in A.P.,

α, β, γ

a α, b β, c γ

in G.P. (with common ratio not equal to 1.), then prov that a : b : c =

\frac{1}{γ} : \frac{1}{β} : \frac{1}{α}

s e c (4 A) = c o s e c (A - 20 °)

4 A

is an acute angle, then what is the value of

A

?

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