# Plane Trigonometry

A) Solve the following, giving all positive values of the angle between 0° and 360° to the nearest minute only.

i) cos2x-sin^2 (x/2)+3/4 = 0

ii) .cos4x =sin2x

iii)sin^2 theta = cos^2 theta +3/2

iv)sin(2x-10°)= 1/2

v) sin2x-cosx = 0

B)Write equivalent equations in the form of inverse functions for :

a)x= y+costheta b)cosy = x^2

© BrainMass Inc. brainmass.com October 9, 2019, 9:32 pm ad1c9bdddfhttps://brainmass.com/math/trigonometry/plane-trigonometry-188785

#### Solution Summary

Neat, step-by-step solution is provided.

$2.19