Question

If cos(alpha + ß)= 4/5 and sin(alpha + ß)= 5/13 , then the value of tan(alpha+ß) is ?​

Answer 1

Answer:

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Explanation:

cos(α+β)=−6365 ; cosβ=1213 and tanα=−34. Explanation: As sinα=35 and α lies in Q2, cosα is negative and. cosα=√1−sin2α=√1−(35)2.