1.

SinA/1+cosA + 1+CosA/SinA = 4​

Answer»

Step-by-step EXPLANATION:

sinA/1+cosA + 1+cosA/sinA=4

sin²A+(1+cosA)²/sinA(1+cosA)=4

sin²A+1+cos²A+2cosA/sinA(1+cosA)=4

2+2cosA/sinA(1+cosA)=4

2/sinA=4

2cosecA=4

cosecA=2

A=30°



Discussion

No Comment Found

Related InterviewSolutions