Problem

(ii) $cos^{2}θ-sin^{2}θ=\left(\dfrac {21} {29}\right)$ $-\left(\dfrac {20} {29}\right)^{2}=\dfrac {41} {841}$
EXERCISE - $11.1$
In right angled triangle $ABC,8cm$ $15cm$ and $17cm$ are the lengths of AB, BC and CA
respectively. Then, find sin A, cos A and tan A.
The sides of a right angled triangle PQR are $PQ=7cm,$ $PR=25cm$ and $∠Q=90$
respectively. Then find, tan $nP-tanR$
In a right angled triangle $ABC$ with right angle at B, in which $a=24$ units, $b=25$ um
and $∠BAC=θ$ Then, find cos 0 and $tanθ.$
If $cosA=\dfrac {12} {13}$ then find sin A and tan A $\left(A<90^{°}\right)$
If $3tanA=4,$ then find sin A and $cosA$

10th-13th grade

Trigonometry

Search count: 113

Solution

Qanda teacher - Sid711

Student

next solution

plz

Qanda teacher - Sid711

but it's against rules to ask multiple questions in a photo

I may be banned for answering

pls understand

Student

k

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