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Trigonometry Questions & Answers

Q:
\( 1 - \sin 2 A = 2 \operatorname { Sin } ^ { 2 } ( 45 ^ { \circ } - A ) \)
Q:
Desde una torre de vigilancia en una playa, un sal- vavidas observa una boya en el mar con un ángulo de depresión de \( 3^{\circ} \). Si la observación se hace desde una altura de 4,5 m, ¿a qué distancia está la boya de la torre?
Q:
\( 2 \cos ^ { 2 } ( 45 ^ { \circ } - \theta ) = 1 + \sin 2 \theta \)
Q:
Du vet att \( \sin v=\frac{3}{7} \). Bestäm \( \tan v \) exakt.
Q:
\( \cos ( x + \frac { n } { 3 } ) < \frac { 1 } { 2 } \)
Q:
UESTION 1 Given: \( A=24,6^{\circ} \) and \( B=127,5^{\circ} \). Determine the value of the following: \( 1.1 .1 \cos 2 A-\sin \frac{1}{2} B \) \( 1.1 .2 \quad 3 \cot A+\tan 3 B \) \( 1.1 .3 \quad 2 \cos ^{2} A \) .2 Determine \( \theta \) in each of the following, where \( \theta \in\left(0^{\circ} ; 90^{\circ}\right): \)
Q:
Faca um esboço grásica: \( y=20 \operatorname{sem} x \) mencione as amplitudes, periados.
Q:
A person on a ship observes a cliff which is 83 The angle of elevation off the top of the cliff, How high up is the cliff? Include a labelled di
Q:
CIO 1 UNO DC lOS DE UN RECTANGIO MIDE \( 4,8 \mathrm{~cm} \), y el ANGUCO OUUESTO A ESE CATETO MIDE \( 54^{\circ} \). HALLA LA MEDIDA DCL RESTO DE CATETOS Y ANGULOS.
Q:
8. \( \tan ^{2} \alpha-\operatorname{sen}^{2} \alpha=\tan ^{2} \alpha \operatorname{sen}^{2} \alpha \)

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