You are given a triangle ABC with sides length AB = 20cm, BC = 100cm and angle A = 70 degrees. Find the angle of C in degrees.

Always draw a diagram first to help with clarity.Correct use of Sine Rule:sin(A)/BC = sin(C)/ABTherefore sin(C) = ABsin(A)/BC sin(C) = 20sin(70)/100 sin(C) = 0.188 (rounded to 3 Significant Figures) C = arcsin(0.188) = 10.83 (rounded to 2 decimal places)

AP
Answered by Arron P. Maths tutor

2625 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Solve the following equation. 7x^2 = 13x +2


y=6x+2 Find the gradient of the line and the y intersect


Why can’t you use the quadratic formula for every quadratic?


Find the roots of x^2+5x+4=0


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