ICSE Class 9 - Trigonometrical Ratios Videos
Trigonometric ratios
This video explains the relationship between sides and angles of a triangle and defines the trigonometric ratios of an angle.
- if CosA+secA= 2, find the value of cosA2 and secA2
- Sin A + cosec A = 2
- If cos A + sec A = 2, find value of cos2 A + sec2 A.
- is zero degree is less than and less than 90 degree and zero satisfies 2 sin square theta minus 1 equals to zero find the value of cos theta + cos 2 theta
-
Solve it
-
if 3cos A = 4sinA, find 4cos²A-3sin²A+2
- tan30.sec45+tan60.sec30
-
CosA=0.5 /cosB=1/√2 find value of
TanA-TanB /1+TanATanB
- If the lengths of each side of a rhombus is 8cm and its one angle is 60 degrees,then fing the length of diagonals of rhombus (Hint:Use the concept of trigonometry)
- In the right angled triangle ABC,angle C=90 degrees and angle B=60 degrees.If AC=6cm,find the lengths of the sides BC and AB (Hint:Use the concept of trigonometry)
