Question

give stepwise explanation for -:
If 3 tan A-5 cos B =(under root 3)and B is=90degree, find value of A.
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Answer 1

Answer:

3tanA - 5cosB = √3.

B = 90° , A=?

3tanA - 5cos90° = √3. (B = 90°)

3tanA- 5.(0) = √3. (cos90°=0)

3tanA = √3.

tanA = √3÷3

tanA = 1/√3.

tanA = tan30°

A = tan30°tan^(-1)

A = 30°