prove that secant power 4 A - tan power 4 A is equal to 1+sin square A divided by cos square A
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tan^(4)theta=1+2tan^(2)theta
Prove that : sec^(4)theta-tan^(4)theta=1+ 2tan^(2)theta. ... 73.9 K SHARES. `sec^4theta(1-sin^ 4theta)-2tan^2theta= play.
Trigonometric Identities Exercise 6.1 helps ... (tan θ × cos θ)2. = (sin θ)2. = sin2 θ. = 1 – cos2 θ. = R.H.S. – Hence Proved. 4. ... sec2 θ − tan2 θ = 1 and sin2 θ + cos2 θ = 1.
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