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trig formulas please help.

0 votes

asked Jan 26, 2015 in TRIGONOMETRY by anonymous

3 Answers

0 votes

step 1:

9)

Reciprocal trigonometric identity

Double angle formula for tangent function is

Since

.

Step 2:

10)

Reciprocal trigonometric identity

Double angle formula for tangent function is

Since

Solution:

and .

answered Jan 26, 2015 by cameron Mentor
0 votes

Step 1:

11)

Reciprocal trigonometric identity .

Half angle formula for cosine function:

Step 2:

12)

Reciprocal trigonometric identity

Double angle formula for tangent function is

image

Since

image

image

image

image

image

image

Solution:

and image

 

answered Jan 26, 2015 by cameron Mentor
0 votes

Step 1:

13) image

Reciprocal trigonometric identity .

Double angle formula for tangent function is .

image

image

Substitute image in image

image

image

image

image

Step 2:

14) image

Reciprocal trigonometric identity

image

Double angle formula for tangent function is

image

image

Substitute image value in double angle expression.

image

image

image

image

Solution:

image and image.

answered Jan 26, 2015 by cameron Mentor

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