Question

PLS HELP ASAP THIS IS TRIGONOMETRY RELATED​

Answer 1

1. sin A = 36.87°

2. cos A = 36.87°

3. tan A = 36.87°

4. sin B = 53.13°

Explanation:

1. sin A

sine = opposite ÷ hypotenuse

sin A = 3 ÷ 5

sin A = 0.6

A = sin-¹ (0.6)

A = 36.869

36.869 can be rounded to 36.87 to 2 decimal points

2. cos A

cos = adjacent ÷ hypotenuse

cos A = 4 ÷ 5

cos A = 0.8

A = 36.87

3. tan A

tan = opposite ÷ adjacent

tan A = 3 ÷ 4

tan A = 0.75

A = 36.87

4. sin B

sin B = 4 ÷ 5

sin B = 0.8

B = 53.13

Answer 2

Explanation:

Sin A = 3/5 , A = Sin-1(3/5) = 36.86°

Cos A = 4/5 , A = Cos-1(4/5) = 36.86°

Tan A = 3/5 ÷ 4/5 = (3×5) ÷ (4×5) = 3/4 = Sin A /Cos A

Note: we have cancelled 5 to become 3/4

A = Tan-1(3/4) = 36.86°

Sin B = 4/5 , B = Sin-1(4/5) = 53.13°