Q12 of 113 Page 547

Prove that


Using sin(90° + θ) = cosθ and sin( - θ) = sinθ,tan(90° + θ) = - cotθ

Sin(180° + θ) = - sinθ(III quadrant sinx is negative)




More from this chapter

All 113 →
10

Prove that

11

Prove that

13

Prove that


 14

If θ and Φ lie in the first quadrant such that , find the values of

(i) sin (θ - Φ )


(ii) cos (θ - Φ)


(iii) tan (θ - Φ)