Question

5.
6.
Without using trigonometric tables, evaluate: sin65° + sin225°
What happens to value of tand when I increases from 0 to 90°?
The angle of elevation of the top of a tower from a point 20 metres away from the base is 45°
Find the height of the tower.
A ladder 15 m long just reaches the top of a vertical wall. If the ladder makes an angle of 60°
with the wall, then find the height of the wall.
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Answer 1

Answer:

Trigonometric Functions and Angles of Rotation . ... Exact Values for Inverse Sine, Cosine, and Tangent . ... If the legs of a right triangle are 5 and 12, then the hypotenuse is ______. 4.