How do you find the length of a side of a right-angled triangle given the angle and the hypotenuse?

First label the triangle to show the opposite, adjacent and hypotenuse. Then you can use SOHCAHTOA to determine which trig function is needed. If you need to work out the opposite you use the sin function and if you need to work out the adjacent you use the cos function. as sin(angle) = opposite/hypotenuse then opposite = sin(angle) x hypotenuse. as cos(angle) = opposite/hypotenuse then opposite = cos(angle) x hypotenuse.

LS
Answered by Lucy S. Maths tutor

2693 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Jo wants to work out the solutions of x^2 + 3x – 5 = 0 She says, ‘‘The solutions cannot be worked out because x^2 + 3x – 5 does not factorise to (x + a)(x + b) where a and b are integers.’’ Is Jo correct?


Expand the brackets: (3a+3)(a+4)


Differentiate the following equation, y = x^9 + 3x^2 + x^(-1)


The probability of getting heads on a biased coin is 0.8. You flip the coin twice. What is the probability of getting one each of heads and tails?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences