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Important information about solving trigonometric equation

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I need check about these :

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+cos(theta) b) cosy = x^2

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Solution Preview

please see the attached file.

Plane Trigonometry
I need check about these :

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 ...

Solution Summary

It shows how to solve trigonometric equations in detail. It also shows who to find equivalent equations in the form of inverse functions.

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