Q7 of 164 Page 41

If find .



∠BAC = θ


Let the third side be p,


By Pythagoras theorem,


⇒ 102 + p2 = 262


⇒ 100 + p2 = 676


⇒ p2 = 576


⇒ p = 24



Therefore, the other angles are:


sin θ =


cos θ =


Putting values in the function as:


⇒


⇒


⇒


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