lee pearce

function y=4-2sin(2t+pi/2), where t is measured in radians. choose one option which gives the value of the function when t=pi radians. a)0 b)1 c)2 d)4 e)pi/4 e)pi/4 f)pi/2 g)pi h)2pi

thank u

Triangle ABC is similar to triangle APQ with angle CBA equal to angle QPA and angle A common to both triangles. the length of sides AB, AP and PQ are 90cm,60cm and 30 cm. calculate the length of the side BC.

cheers Damon

Cheers Reiny