1thanx prajith, but why use cosine form?
USEFUL TECHNIQUES TO SOLVE TRIGO EQUATIONS
CHECK VALIDITY OF EQUATION BEFORE SOLVING
SQUARING SHUD BE AVOIDED AS FAR AS POSSIBLE,IF SQUARING IS DONE CHECK FOR EXTRANNEOUS ROOTS
DO NOT CANCEL TERMS CONTAINING UNKNOWN TERMSON TWO SIDES OF EQUATION AS IT MAY LEAD TO LOSS OF ROOTS
ALL SOLN MUST COME WITHIN DOMAIN OF VARIABLES
IF GIVEN A CHOICE OF CONVERTIN TRIGO EQUATION TO SINE OR COSINE FORM CHOOSE COSINE FORM
FOR PRINCIPLE VALUE (NUMERICALLY LEAST ANGLE)
IN CASE 2 ANGLES ARE SAME WITH OPPOSITE SIGN CHOOSE ONE WID POSITIVE SIGN
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3 Answers
1BECAZ U JUZZ TAKE AN EXAMPLE AND SEE ADITYA TAKE COSINE IT WILL BE MUCH EFFECTIVE!!!!!JUZZ CHECK