In fig. 5-36, let the mass of the block be 8.5 kg and the angle θ be 30°. find (a) the tension in the cord and (b) the normal force acting on the block. (c) if the cord is cut, find the magnitude of the resulting acceleration of the block.

i just want to know why you use sin to find the tension and not cos

Aquadratic function f(x) has a turning point at (3,-7). what is the turning point of -f(x)?

What is the value of x when x + 7 = 21?

With these 5 geometry questions! pls 1.)quadrilateral abcd is inscribed in this circle.what is the measure of ∠a ? enter your answer in the box.°2.)quadrilateral abcd is inscribed in a circle.what is the measure of angle a? enter your answer in the box.m∠a= 3.)quadrilateral abcd is inscribed in this circle.what is the measure of angle b? enter your answer in the box.m∠b= °4.)quadrilateral abcd is inscribed in this circle.what is the measure of angle a? enter your answer in the box.°5.) quadrilateral abcd is inscribed in this circle.what is the measure of angle c? enter your answer in the box.°