# Trigonometry

**Trigonometry (Question)**

- If sin x = 4/5 and cos x = 3/5, what is the value of tan x?
- If tan x = 12/5 while cos x = 5/13, what is the value of sin x?
- If tan x = 0.75 and the adjacent length is 10cm. What is the length for the hypothenuse?

*Guide: *

*sin x = t/hcos x = s/htan x = t/st – opposite sides – adjacent sideh – hypotenuse*

**Trigonometry (Answer)**

- 4/3
- 12/13
- 12.5cm

## About Dr Loo - O-level & JC H2 math tutor

I am Dr Loo, a PhD holder with 8 years of teaching experience on secondary school and tertiary level specialize on mathematics and statistics. In addition, I also received teaching training under tertiary setting. Furthermore, I have published 5 research papers on international peer reviewed journals. If you are currently looking for secondary mathematics tuition or A-level math tuition in Singapore, I do provide O-level Math Tutoring & JC Math Tutoring (H1 Math Tuition Class & H2 Math Tuition Class).

Thus, for those who are looking for a JC Math Tutor (H1 Math tutor or H2 Math tutor) as well as O-level Math Tutor (E-math tutor or A-math tutor), you may contact me for my math tuition in Singapore. I can be contacted through SMS/Whatsapp/Telegram at +65-85483705.