Ask Singapore Homework?

Upload a photo of a Singapore homework and someone will email you the solution for free.



Question

secondary 4 | E Maths
One Answer Below

Anyone can contribute an answer, even non-tutors.

Answer This Question
Jason Lee
Jason Lee

secondary 4 chevron_right E Maths chevron_right Singapore

please help! thanks

Date Posted: 2 years ago
Views: 263
sstrike
Sstrike
2 years ago
Q(3)
cos θ = ⁵⁄₁₃ = b/c
b = 5
c = 13

a² = c² - b²
= 13² - 5²
= 144
= 12²
a = 12

cosec θ = 1/ ( sin θ )
= c/a
= ¹³⁄₁₂ (Ans)

Q(4)
b = k
a = -1
c = √b²+a²
= √k²+1

sec A = 1/ (cos A)
= c/k
= (√k²+1) / k (Ans)

See 1 Answer

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Johnson
Johnson's answer
21 answers (Tutor Details)
1st
Hope u find it useful