Q9 of 164 Page 41

If , evaluate

Simplifying the function:


⇒


⇒



Let the third side be p,


By Pythagoras theorem,


⇒ 82 + 152 = P2


⇒ 64 + 225 = p2


⇒ p2 = 289


⇒ p = 17



Therefore, the other angles are:


sin θ =


cos θ =


Putting these values in the simplied function:
⇒


⇒


⇒


⇒


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