Common core math Trigomometry Functions | CCSS.MATH.CONTENT.HSF.TF.C.9 | Right Triangle Trigonometry

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http://www.learncbse.in/ncert-class-10-math-solutions/

http://www.learncbse.in/ncert-solutions-for-class-10-maths-chapter-8-introduction-to-trigonometry/

http://www.learncbse.in/rd-sharma-class-10-solutions-chapter-5-trigonometric-ratios/

00:02 CCSS.MATH.CONTENT.HSF.TF.C.9 Q9. In triangle ABC, right-angled at B, if tan A = 1/ sqrt (3) : find the value of:

(i) sin A cos C + cos A sin C (ii) cos A cos C – sin A sin C

00:38 Naming the sides | Determining the sides of right angles triangles using Trigonometric Ratio Tan.

01:30 tangent of angle theta = side opposite to angle theta / side adjacent to angle theta.

Remeber as ' TAO '. Tan is adjacent over Opposite.Remember as ' TAO '

03:12 SOH means sin is equal to opposite over hypotenuse

03:36 CAH means Cosine equals Adjacent over Hypotenus

02:24 Pythagoras Law

04:47 (i)

05:56 (ii)

06:33 CCSS.MATH.CONTENT.HSF.TF.C.9 q10. In triangle PQR, right- angled at Q, PR + QR = 25 cm and PQ = 5 cm. Determine the values of sin P, cos P and tan P.

07:27 Finding sides of sides of right triangle

11:08 sin is equal to opposite over hypotenuse.

Remember as ' SOH '

11:33 cosine of angle theta = side adjacent to angle theta / hypotenuse

Remember as ' CAH ' Cosine equals Adjacent over Hypotenus.

12:22 Tangent of angle theta = side opposite to angle theta / side adjacent to angle theta.

12:40 11. State whether the following are true or false. Justify your answer.

12:43 (i) The value of tan A is always less than 1.

12:45 False ,Explanation.

13:22 (ii) sec A = 12/5 for some value of angle A.

13:26 True

14:05 (iii) cos A is the abbreviation used for the cosecant of angle A.

14:15 False

14:30 cosine of angle is abbreviated as Cos A.

14:40 (iv) cot A is the product of cot and A.

14:45 cot A is cotangent of angle A

14:50 (v) sin theta = 4/3 for some angle theta

15:01 Important property of sine.

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Tagged under: ncert solutions,learncbse.,gyanpub,Pythagorian Identity,Trigomometry,Naming sides,Adjacent Hypotenus.,CAH,SOH, hypotenuse,Adjacent Hypotenus,Tangent,Pythagoras Law

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