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HELP WITH TRIG, EQUATIONS, SOLVE FOR X

0 votes

asked Jun 14, 2017 in TRIGONOMETRY by anonymous
reshown Jun 14, 2017 by goushi

4 Answers

0 votes

2.1)

Step 1:

The trigonometric identity is image

Consider LHS is image

Trigonometric properties are

image

Substitute formulas in LHS and simplify.

image

Solution:

image

answered Jun 14, 2017 by Anney Mentor
0 votes

2.2)

The trigonometric expression is image

Rewrite the identity is image

Sum of trigonometric identity :image

image

answered Jun 14, 2017 by Anney Mentor
0 votes

2.3)

The values of acute triangle image

Find the value of image

Difference of trigonometric identity :image

Rewrite the angle is

image

Substitute above values in image

image

answered Jun 14, 2017 by Anney Mentor
0 votes

2.4)

The expression is  image

Simplify.

image

answered Jun 14, 2017 by Anney Mentor
reshown Jun 14, 2017 by goushi

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