CBSE Class 10 Answered
If sinA=1/root5 & sinB= 1/root10, find the values of cosA and cosB. Hence using the formula cos (A+B)=cosA .cosB- sinA.sinB, show that A+B=45
Asked by | 14 Sep, 2013, 09:16: AM
Expert Answer
Answered by | 14 Sep, 2013, 10:12: PM
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