Question

plz answer my question correctly I will mark you as BRAINLIEST.......!!!!​

Answer 1

Answer:

Step-by-step explanation;

a) sin⁻¹ 1 means the angle,θ for which sin θ equal 1

⇒ sin θ = 1

⇒ θ=sin⁻¹ 1

⇒ θ= 90°

∴ sin⁻¹ 1 = 90°

SAME EXPLANATION FOR THE OTHERS

b) cos⁻¹ (3/5) means the angle,θ for which cos θ equal (3/5)

⇒ cos θ =3/5

⇒ θ = cos⁻¹ (3/5)

⇒ θ= 53.13°

∴ cos⁻¹ (3/5)=53.13°

c) tan⁻¹ (4/3) =53.13