资讯

PT is a tangent and CT is a radius, therefore \(\angle CTP=90^\circ\). (This right angle is not usually marked for you on the diagram. You have to deduce it is there because PT is a tangent to the ...
Calculate the angle QPR. Give the answer to one decimal place. Label the sides of the triangle \(o\), \(a\) and \(h\). Next choose the correct ratio from \(s^o_h~c^a_h~t^o_a\). In the triangle the ...