Sec 3 Add Maths

Lee012lee SG

For Sec 3 Add Maths students to practise,

Question 1

Prove that (1+cosA+sinA)/(1+cosA-sinA)=(1+sinA)/cosA

Question 2

(a) Prove that [sin^-1 (0.5)]/[cos^-1 (0.5)] = 0.5

(b) Explain why is [sin^-1 (0.2)]/[cos^-1 (0.2)] not equal to 0.2