precal hw

1.A kite is caught in the top branches of a tree. If the 90ft kite string makes and angle of 22 degrees with he ground, estimate the height of the tree by finding the distance from the kite to the ground. 2. Evaluate cos - using: a) A sum/difference identity for cosine b) Using the half angle identity wallet pthavice.or 3.If cosx = - and sinx