Monday

April 21, 2014

April 21, 2014

Posted by **John** on Thursday, September 14, 2006 at 8:37pm.

You should know the basic relation between sine and cosine is

sin(x)=cos(90 -x) Thus

B+15 = 90 - (2B+30) so

3B +45 = 90 or

3B = 45 and B =45/3

No, you cannot just set them equal to each other.

**Related Questions**

Math - 3x-4 to y+15 is constant and y=3 when x=2 then when y=12, x equals? My ...

Geometry One multiple choice question! - Write the ratios for sin A and cos A. {...

Physics - thanks for answering the question I got another one... A 15.0 kg box ...

PSY - CAN SOMEONE TELL ME IN EASY TERM HOW IM SUPPOSE TO ANSWER THIS QUESTION ...

trig - Reduce the following to the sine or cosine of one angle: (i) sin145*cos75...

Trig - Find cos(s+t) if cos s= -1/2 and sin t= 3/5, s and t are in quadrant II. ...

trigonometry (please double check this) - Solve the following trig equations. ...

trig - I am very confused about the concepts of.. sin è = sin(180 - è) sin (180...

Geometry Please Help With One Multiple Choice - Write the ratios for sin A and ...

trig - 2sin(4x)[(cos(3/2)x)(cos(5x/2)-sin((15/4)x)]+x can someone simplify this ...