In a triangle ABC where angle CAB = 90 and angle ABC = 40 and the hypotenuse = 20cm, what is the length CA? Then find the total perimeter of the triangle.

Use SOH CAH TOA to determine which trigonometric function to useTo calculate CA Sine should be usedWe then get an answer of 12.86cm for CAWe can then either use Cosine or pythagorus to calculate AB
Final answer: 47.76cm

JD
Answered by Jack D. Maths tutor

2912 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Show that (sqrt(3) + sqrt(75))^{2} = 108


Prove that one interior angle of a a regular octagon = 135 degrees


The equation of the line L1 is y = 3x – 2 The equation of the line L2 is 3y – 9x + 5 = 0 Show that these two lines are parallel


Use factorisation to solve the equation x^2+5x+6=0


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning