Pls solve it with explanation both 1 and 2 True/ False 1 If tanA=1-cosBsinB, then tan 2A = - Maths -

Question

Pls solve it with explanation both 1 and 2

True/ False
1 If tan A = 1 - cos B sin B , then tan 2A = tan
B
2 There exists a value of θ between 0 and 2 π that
satisfies the equation sin 4 θ - 2 sin 2 θ - 1 = 0

Mohammed Faisal · Accepted Answer

Pls solve it with explanation both 1 and 2 True/ False 1. If tan A = 1 - cos B sin B , then tan 2A = tan B. 2. There exists a value of θ between 0 and 2 π that satisfies the equation sin 4 θ - 2 sin 2 θ - 1 = 0 .

Pls solve it with explanation both 1 and 2

True/ False
1. If $\tan A = \frac{(1 - \cos B)}{\sin B}$ , then tan 2A = tan B.
2. There exists a value of $θ$ between 0 and $2 π$ that satisfies the equation $\sin^{4} θ - 2 \sin^{2} θ - 1 = 0$ .