Question

Constuct a right angled triangle ABC (<B=90°) of your choice ,write down the
measurements and prove the following identities.
1. i) Sin? A+Cos? A =1
2. ii) 1+Tan? A = Sec? A
iii) 1+ cot? A = Cosec2 A​

Answer 1

Answer:

Basic Concepts.

Use sine ratio to calculate angles and sides (Sin = o h \frac{o}{h} h o​ )

Use cosine ratio to calculate angles and sides (Cos = a h \frac{a}{h} h a​ )

Factoring difference of squares: x 2 − y 2 x^2 - y^2 x2−y2.

Unit circle.

Step-by-step explanation: