Question No. 9 & Question No. 12

Name: Question No. 9 & Question No. 12
Uploaded: 2015-09-09T06:37:01+00:00
Duration: 11 min 14 s
Channel: Punjab Group of Colleges
Description: Lesson#8 Question No. 9 Q9: Prove the following identity: (2 sinθ sin2θ)/(cosθ+cos3θ)=tan2θ tanθ Question No. 12 Q12: Prove the following identity: (tan θ/2+cot θ/2)/(cot θ/2−tan θ/2)=secθ Trigonometric Identities Chapter No 10 Exercise No 10.3 Mathematics part 1

Punjab Group of Colleges

Lesson#8   Question No. 9   Q9:    Prove the following identity:  (2 sinθ sin2θ)/(cosθ+cos3θ)=tan2θ tanθ   Question No. 12   Q12:    Prove the following identity:  (tan θ/2+cot θ/2)/(cot θ/2−tan θ/2)=secθ  Trigonometric Identities  Chapter No 10  Exercise No 10.3  Mathematics   part 1

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