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4. Express the following angles into radians.(viii) 315^{\circ}
4. Express the following angles into radians.(viii)  315^{\circ}

4. Express the following angles into radians.(viii) 315^{\circ}

1. Locate the following angles:(vii) -150^{\circ}
1. Locate the following angles:(vii)  -150^{\circ}

1. Locate the following angles:(vii) -150^{\circ}

Example: Locate each angle in standard position.(iii) -270^{\circ}
Example: Locate each angle in standard position.(iii)  -270^{\circ}

Example: Locate each angle in standard position.(iii) -270^{\circ}

2. Identify the closest rantal angles between which the following angles lies.(iii) 572^{\circ}
2. Identify the closest rantal angles between which the following angles lies.(iii)  572^{\circ}

2. Identify the closest rantal angles between which the following angles lies.(iii) 572^{\circ}

In problems 7-24 verify the identities.21. \sin ^{3} \theta=\sin \theta-\sin \theta \cos ^{2} \theta
In problems  7-24  verify the identities.21.  \sin ^{3} \theta=\sin \theta-\sin \theta \cos ^{2} \theta

In problems 7-24 verify the identities.21. \sin ^{3} \theta=\sin \theta-\sin \theta \cos ^{2} \theta

Example 1: A flagpole 17.9 meter high casts a 7 meter shadow Find the angle of elevation of the sun.
Example 1: A flagpole  17.9  meter high casts a 7 meter shadow Find the angle of elevation of the sun.

Example 1: A flagpole 17.9 meter high casts a 7 meter shadow Find the angle of elevation of the sun.