Prove that -4 cos 2 A A -15-tan A -15-1-2 sin 2 A

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Properties Derived from Trigonometric Identities

Prove that :4...

Question

Prove that :
4cos2A
cot(A+15°) – tan(A - 15°) = ----------------
1+ 2sin2A

Open in App

Solution

Suggest Corrections

Similar questions

cot (A + 15^{\circ}) - tan (A - 15^{\circ}) = \frac{4 cos 2 A}{1 + 2 sin 2 A}

s i n^{4} A - c o s^{4} A = 2 s i n^{2} A - 1

\frac{1 + s i n A}{1 - s i n A} = s e c A - t a n A

\frac{s i n A - 2 s i n^{2} A}{2 c o s^{3} A - c o s A} = t a n A

\frac{(1 - 2 {sin}^{2} A)}{{cos}^{4} A - {sin}^{4} A} = 2 {cos}^{2} A - 1

sec A = \frac{17}{8}

1 - 2 {sin}^{2} A = 2 {cos}^{2} - 1

Join BYJU'S Learning Program