Calculate the length of side AB (opposite) in a right angled triangle, where angle C is 32 degrees and length of BC (hypotenuse) is 8cm.

First, we can draw a diagram to visualise the triangle and the elements of the question. Looking at this, we can see that we know the length of the hypotenuse (H) and we need to calculate the length of the opposite (O) side, AB. Therefore, from the trigonometric ratios, we need to choose the ratio involving the letters O and H which is the sine ratio: SOH.Sin(x) = opposite/hypotenuse Inputting the information from the question… sin(32) = AB/8 8 x sin(32) = AB (Multiply both sides by 8 to isolate the opposite side as the subject)AB = 4.2 cm

Answered by Prachi A. Maths tutor

2870 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Solve the simultaneous equations: 6x +2y = 2 and 12x - 3y = 18


What is the quadratic formula and how do I use it?


How do I solve simultaneous equations?


Nadia has £5 to buy pencils and rulers. Pencils are 8p each. Rulers are 30p each. She says “I will buy 15 pencils. Then I will buy as many rulers as possible. With my change I will buy more pencils.” How many pencils and how many rulers does she buy?


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 2013–2024

Terms & Conditions|Privacy Policy
Cookie Preferences