# 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, 22:12: PM

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