Trigonometric Identities Exam Question Solutions

In this video I give full solutions to the exam questions on trigonometric identities

0:00 Intro
0:10 Q1
1:04 Q2
2:41 Q3
3:39 Q4
4:43 Q5
5:33 Q6
6:19 Q7
8:03 Q8
8:59 Q9
10:24 Q10
11:59 Q11

[kabbberz]

it’s so easy when it’s being explained but when i have to do it myself it’s so confusing help

[Phoneuser]

This channel is soooo underrated. It's the best maths channel I've ever seen. He deserves more.

[libbyshort]

Hi, I was just wondering how you know when to substitute which identities in ? I struggle with this, as I don't know which ones to use. I understand how you use them, I was just wondering if you have any tips on knowing which ones to use and when. Thank you so much

[amanhayre]

thank you so so much for your the questions and solutions. they have really helped. before i was clueless with trig identities but thanks to you i've improved so much over only 2 days!

[alexvick]

For question 2 can you just divide both sides by 2 and then prove that it equals tan theta

[Dhmr_]

Is it calm if I made the 2 in the first question into 2(sin^2 + cos^2) with the sin^2 + cos^2 = 1 thing ?

[manishasinghal]

which exam is this? in what grade do students give this exam?

[savedhan]

hi!!, for q8 why is sin^2 theta - 1 not substituted as cos^2 theta please?

[jamiespurling]

how do you know when to factorise is . Trigonometric Identities are killing me